We show theoretically that quantized zero-bias conductance peaks should be ubiquitous in superconductor-semiconductor hybrids by employing a zero-dimensional random matrix model with continuous tuning parameters. We demonstrate that a normal metal-superconductor (NS) junction conductance spectra can be generically obtained in this model replicating all features seen in recent experimental results. The theoretical quantized conductance peaks, which explicitly do not arise from spatially isolated Majorana zero modes, are easily found by preparing a contour plot of conductance over several independent tuning parameters, mimicking the effect of Zeeman splitting and voltages on gates near the junction. This suggests that, even stable apparently quantized conductance peaks need not correspond to isolated Majorana modes; rather, the a priori expectation should be that such quantized peaks generically occupy a significant fraction of the high-dimensional tuning parameter space that characterizes the NS tunneling experiments.

}, issn = {2469-9950}, doi = {10.1103/PhysRevB.101.024506}, author = {Pan, Haining and Cole, William S. and Sau, Jay D. and Das Sarma, Sankar} } @article {tenasini_giant_2020, title = {Giant anomalous {Hall} effect in quasi-two-dimensional layered antiferromagnet {Co1}/{3NbS2}}, journal = {Phys. Rev. Res.}, volume = {2}, number = {2}, year = {2020}, note = {Place: ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA Publisher: AMER PHYSICAL SOC Type: Article}, month = {apr}, abstract = {The discovery of the anomalous Hall effect (AHE) in bulk metallic antiferromagnets (AFMs) motivates the search of the same phenomenon in two-dimensional (2D) systems, where a quantized anomalous Hall conductance can, in principle, be observed. Here we present experiments on microfabricated devices based on Co1/3NbS2, a layered AFM that was recently found to exhibit AHE in bulk crystals below the Neel temperature T-N = 29 K. Transport measurements reveal a pronounced resistivity anisotropy, indicating that upon lowering temperature the electronic coupling between individual atomic layers is increasingly suppressed. The experiments also show an extremely large anomalous Hall conductivity of approximately 400 S/cm, more than one order of magnitude larger than in the bulk, which demonstrates the importance of studying the AHE in small exfoliated crystals, less affected by crystalline defects. Interestingly, the corresponding anomalous Hall conductance, when normalized to the number of contributing atomic planes, is similar to 0.6 e(2)/h per layer, approaching the value expected for the quantized anomalous Hall effect. The observed strong anisotropy of transport and the very large anomalous Hall conductance per layer make the properties of Co1/3NbS2 compatible with the presence of partially filled topologically nontrivial 2D bands originating from the magnetic superstructure of the antiferromagnetic state. Isolating atomically thin layers of this material and controlling their charge density may therefore provide a viable route to reveal the occurrence of the quantized AHE in a 2D AFM.

}, doi = {10.1103/PhysRevResearch.2.023051}, author = {Tenasini, Giulia and Martino, Edoardo and Ubrig, Nicolas and Ghimire, Nirmal J. and Berger, Helmuth and Zaharko, Oksana and Wu, Fengcheng and Mitchell, J. F. and Martin, Ivar and Forro, Laszlo and Morpurgo, Alberto F.} } @article { ISI:000524530000001, title = {Ground-state energy estimation of the water molecule on a trapped-ion quantum computer}, journal = {npj Quantum Inform.}, volume = {6}, number = {1}, year = {2020}, month = {APR 3}, pages = {33}, publisher = {NATURE PUBLISHING GROUP}, type = {Article}, abstract = {Quantum computing leverages the quantum resources of superposition and entanglement to efficiently solve computational problems considered intractable for classical computers. Examples include calculating molecular and nuclear structure, simulating strongly interacting electron systems, and modeling aspects of material function. While substantial theoretical advances have been made in mapping these problems to quantum algorithms, there remains a large gap between the resource requirements for solving such problems and the capabilities of currently available quantum hardware. Bridging this gap will require a co-design approach, where the expression of algorithms is developed in conjunction with the hardware itself to optimize execution. Here we describe an extensible co-design framework for solving chemistry problems on a trapped-ion quantum computer and apply it to estimating the ground-state energy of the water molecule using the variational quantum eigensolver (VQE) method. The controllability of the trapped-ion quantum computer enables robust energy estimates using the prepared VQE ansatz states. The systematic and statistical errors are comparable to the chemical accuracy, which is the target threshold necessary for predicting the rates of chemical reaction dynamics, without resorting to any error mitigation techniques based on Richardson extrapolation.}, doi = {10.1038/s41534-020-0259-3}, author = {Nam, Yunseong and Chen, Jwo-Sy and Pisenti, Neal C. and Wright, Kenneth and Delaney, Conor and Maslov, Dmitri and Brown, Kenneth R. and Allen, Stewart and Amini, Jason M. and Apisdorf, Joel and Beck, Kristin M. and Blinov, Aleksey and Chaplin, Vandiver and Chmielewski, Mika and Collins, Coleman and Debnath, Shantanu and Hudek, Kai M. and Ducore, Andrew M. and Keesan, Matthew and Kreikemeier, Sarah M. and Mizrahi, Jonathan and Solomon, Phil and Williams, Mike and Wong-Campos, Jaime David and Moehring, David and Monroe, Christopher and Kim, Jungsang} } @article { ISI:000535764500019, title = {Guiding and confining of light in a two-dimensional synthetic space using electric fields}, journal = {Optica}, volume = {7}, number = {5}, year = {2020}, month = {MAY 20}, pages = {506-513}, publisher = {OPTICAL SOC AMER}, type = {Article}, abstract = {Synthetic dimensions provide a promising platform for photonic quantum simulations. Manipulating the flow of photons in these dimensions requires an electric field. However, photons do not have charge and do not directly interact with electric fields. Therefore, alternative approaches are needed to realize electric fields in photonics. One approach is to use engineered gauge fields that can mimic the effect of electric fields and produce the same dynamical behavior. Here, we demonstrate such an electric field for photons propagating in a two-dimensional synthetic space. Generation of electric fields in a two-dimensional synthetic lattice provides the possibility to guide photons and to trap them through the creation of quantum confined structures. We achieve this using a linearly time-varying gauge field generated by direction-dependent phase modulations. We show that the generated electric field leads to Bloch oscillations and the revival of the state after a certain number of steps dependent on the field strength. We measure the probability of the revival and demonstrate a good agreement between the observed values and the theoretically predicted results. Furthermore, by applying a nonuniform electric field, we show the possibility of waveguiding photons. Ultimately, our results open up new opportunities for manipulating the propagation of photons with potential applications in photonic quantum simulations. (C) 2020 Optical Society of America under the terms of the OSA Open Access Publishing Agreement}, issn = {2334-2536}, doi = {10.1364/OPTICA.386347}, author = {Chalabi, Hamidreza and Barik, Sabyasachi and Mittal, Sunil and Murphy, Thomas E. and Hafezi, Mohammad and Waks, Edo} } @article {ISI:000452005100052, title = {Gateless and reversible Carrier density tunability in epitaxial graphene devices functionalized with chromium tricarbonyl}, journal = {Carbon}, volume = {142}, year = {2019}, month = {FEB}, pages = {468-474}, publisher = {PERGAMON-ELSEVIER SCIENCE LTD}, type = {Article}, abstract = {Monolayer epitaxial graphene (EG) has been shown to have clearly superior properties for the development of quantized Hall resistance (QHR) standards. One major difficulty with QHR devices based on EG is that their electrical properties drift slowly over time if the device is stored in air due to adsorption of atmospheric molecular dopants. The crucial parameter for device stability is the charge carrier density, which helps determine the magnetic flux density required for precise QHR measurements. This work presents one solution to this problem of instability in air by functionalizing the surface of EG devices with chromium tricarbonyl - Cr(CO)(3). Observations of carrier density stability in air over the course of one year are reported, as well as the ability to tune the carrier density by annealing the devices. For low temperature annealing, the presence of Cr(CO)(3) stabilizes the electrical properties and allows for the reversible tuning of the carrier density in millimeter-scale graphene devices close to the Dirac point. Precision measurements in the quantum Hall regime show no detrimental effect on the carrier mobility. Published by Elsevier Ltd.}, issn = {0008-6223}, doi = {10.1016/j.carbon.2018.10.085}, author = {Rigosi, Albert F. and Kruskopf, Mattias and Hill, Heather M. and Jin, Hanbyul and Wu, Bi-Yi and Johnson, Philip E. and Zhang, Siyuan and Berilla, Michael and Walker, Angela R. Hight and Hacker, Christina A. and Newell, David B. and Elmquist, Randolph E.} } @article { ISI:000493516700001, title = {Gauging fractons: Immobile non-Abelian quasiparticles, fractals, and position-dependent degeneracies}, journal = {Phys. Rev. B}, volume = {100}, number = {15}, year = {2019}, month = {OCT 29}, pages = {155146}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {The study of gapped quantum many-body systems in three spatial dimensions has uncovered the existence of quantum states hosting quasiparticles that are confined, not by energetics but by the structure of local operators, to move along lower dimensional submanifolds. These so-called {\textquoteleft}{\textquoteleft}fracton{{\textquoteright}{\textquoteright}} phases are beyond the usual topological quantum field theory description, and thus require new theoretical frameworks to describe them. Here we consider coupling fracton models to topological quantum field theories in (3 + 1) dimensions by starting with two copies of a known fracton model and gauging the Z(2) symmetry that exchanges the two copies. This yields a class of exactly solvable lattice models that we study in detail for the case of the X-cube model and Haah{\textquoteright}s cubic code. The resulting phases host finite-energy non-Abelian immobile quasiparticles with robust degeneracies that depend on their relative positions. The phases also host non-Abelian string excitations with robust degeneracies that depend on the string geometry. Applying the construction to Haah{\textquoteright}s cubic code in particular provides an exactly solvable model with finite energy yet immobile non-Abelian quasiparticles that can only be created at the corners of operators with fractal support.}, issn = {2469-9950}, doi = {10.1103/PhysRevB.100.155146}, author = {Bulmash, Daniel and Barkeshli, Maissam} } @article {14901, title = {Generation and detection of spin-orbit coupled neutron beams}, journal = {Proceedings of the National Academy of Sciences}, volume = {116}, year = {2019}, pages = {20328{\textendash}20332}, abstract = {Extensive interest has been placed on the techniques to prepare and characterize optical and matter wave orbital angular momentum (OAM) beams and spin correlated OAM beams. They have been shown to be useful in a wide range of applications such as microscopy, quantum information processing, material characterization, and communication protocols. Here we demonstrate an observation of spin-orbit beams and lattices of spin-orbit beams with neutrons. Neutrons, which do not possess a charge and have significant mass, are probes of nature that are complementary to photons and electrons. The techniques shown here enable neutron OAM applications in material characterization and fundamental physics.Spin-orbit coupling of light has come to the fore in nanooptics and plasmonics, and is a key ingredient of topological photonics and chiral quantum optics. We demonstrate a basic tool for incorporating analogous effects into neutron optics: the generation and detection of neutron beams with coupled spin and orbital angular momentum. The 3He neutron spin filters are used in conjunction with specifically oriented triangular coils to prepare neutron beams with lattices of spin-orbit correlations, as demonstrated by their spin-dependent intensity profiles. These correlations can be tailored to particular applications, such as neutron studies of topological materials.

}, issn = {0027-8424}, doi = {10.1073/pnas.1906861116}, url = {https://www.pnas.org/content/116/41/20328}, author = {Sarenac, Dusan and Kapahi, Connor and Chen, Wangchun and Clark, Charles W. and Cory, David G. and Huber, Michael G. and Taminiau, Ivar and Zhernenkov, Kirill and Pushin, Dmitry A.} } @article {ISI:000468210200030, title = {Graphene Devices for Tabletop and High-Current Quantized Hall Resistance Standards}, journal = {IEEE Trans. Instrum. Meas.}, volume = {68}, number = {6, SI}, year = {2019}, month = {JUN}, pages = {1870-1878}, publisher = {IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC}, type = {Article}, abstract = {We report the performance of a quantum Hall resistance standard based on epitaxial graphene maintained in a 5-T tabletop cryocooler system. This quantum resistance standard requires no liquid helium and can operate continuously, allowing year-round accessibility to quantized Hall resistance measurements. The nu = 2 plateau, with a value of R-K/2, also seen as RH, is used to scale to 1 k Omega using a binary cryogenic current comparator (BCCC) bridge and a direct current comparator (DCC) bridge. The uncertainties achieved with the BCCC are such as those obtained in the state-of-the-art measurements using GaAs-based devices. BCCC scaling methods can achieve large resistance ratios of 100 or more, and while room temperature DCC bridges have smaller ratios and lower current sensitivity, they can still provide alternate resistance scaling paths without the need for cryogens and superconducting electronics. Estimates of the relative uncertainties of the possible scaling methods are provided in this report, along with a discussion of the advantages of several scaling paths. The tabletop system limits are addressed as are potential solutions for using graphene standards at higher currents.}, keywords = {Binary cryogenic current comparator (BCCC), direct current comparator (DCC), Epitaxial graphene (EG), Metrology, quantized Hall resistance (QHR), standard resistor, standards and calibration}, issn = {0018-9456}, doi = {10.1109/TIM.2018.2882958}, author = {Rigosi, Albert F. and Panna, Alireza R. and Payagala, Shamith U. and Kruskopf, Mattias and Kraft, Marlin E. and Jones, George R. and Wu, Bi-Yi and Lee, Hsin-Yen and Yang, Yanfei and Hu, Jiuning and Jarrett, Dean G. and Newell, David B. and Elmquist, Randolph E.} } @article {ISI:000471944200018, title = {Griffiths physics in an ultracold Bose gas}, journal = {Phys. Rev. A}, volume = {99}, number = {6}, year = {2019}, month = {JUN 17}, pages = {063611}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {Coupled XY model systems consisting of three-dimensional (3D) systems with disordered interlayer physics are of significant theoretical interest. We realize a set of coupled quasi-2D layers of Rb-87 in the presence of disordered interlayer coupling. This is achieved with our high bandwidth arbitrary optical lattice to obviate restrictions on the dimensionality of disorder with speckle-generated optical fields. We identify phase crossover regions compatible with the existence of a pair of intermediate Griffiths phases between a thermal state and the emergence of bulk 3D superfluidity.}, issn = {2469-9926}, doi = {10.1103/PhysRevA.99.063611}, author = {Reed, M. E. W. and Smith, Z. S. and Dewan, Aftaab and Rolston, S. L.} } @article { ISI:000504638400005, title = {Ground state excitation of an atom strongly coupled to a free quantum field}, journal = {Phys. Rev. D}, volume = {100}, number = {12}, year = {2019}, month = {DEC 26}, pages = {125019}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {This paper presents a nonperturbative treatment of strong-coupling induced effects in atom-field systems which cannot be seen in traditional perturbative treatments invoking compromising assumptions such as the Born-Markov, rotating wave, or Fermi Golden rule. We consider an atom whose internal degrees of freedom are modeled by a harmonic oscillator which is bilinearly coupled to a scalar quantum field, representing one of the two polarizations of an electromagnetic field. Because the whole system is Gaussian we can solve this problem exactly. Using the open quantum system conceptual framework and the influence functional formalism we derive the dynamics of the reduced density matrix for the atom which enables the calculation of atomic transition probability and other relevant physical quantities. Finding an exact solution to this problem has the distinct advantage of enabling one to capture fully the strong coupling regime and discover interesting effects such as spontaneous ground state excitation {[}R. Passante, T. Petrosky, and I. Prigogine, Long-time behaviour of self-dressing and indirect spectroscopy, Physica (Amsterdam) 218A, 437 (1995).] which is unfathomable in perturbative treatments. The conventional description of atomic-optical activities is predicated on the assumption that the state of the total atom-field system is a product state of the atomic excitations and the photon number states, an assumption which is valid only for vanishingly weak coupling. The correct energy eigenfunctions to use should be that of the Hamiltonian of the combined atom-field system. Other features associated with finite to strong coupling effects such as resonance peak broadening and transition from a gapped to a gapless spectrum can all be understood from this perspective. Finally, to put the issues in a proper perspective we take the perturbative limit of the exact results and compare them with those from conventional time-dependent perturbation theory (TDPT). This enables one to pin-point where the deficiencies of TDPT lie as one removes the ultraweak coupling assumption.}, issn = {2470-0010}, doi = {10.1103/PhysRevD.100.125019}, author = {Hsiang, Jen-Tsung and Hu, Bei-Lok} } @article {ISI:000483803100006, title = {Ground state of the three-dimensional BCS d-wave superconductor}, journal = {Phys. Rev. B}, volume = {100}, number = {10}, year = {2019}, month = {SEP 4}, pages = {104503}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {We determine the mean-field ground state of the three-dimensional rotationally symmetric d-wave (l = 2) superconductor at weak coupling. It is a noninert state, invariant under the symmetry C-2 only, which breaks time-reversal symmetry almost maximally, and features a high but again less-than-maximal average magnetization. The state obtained by minimization of the expanded sixth-order Ginzburg-Landau free energy is found to be an excellent approximation to the true ground state. The coupling to a parasitic s-wave component has only a minuscule quantitative and no qualitative effect on the ground state.}, issn = {2469-9950}, doi = {10.1103/PhysRevB.100.104503}, author = {Herbut, Igor F. and Boettcher, Igor and Mandal, Subrata} } @article {ISI:000473018400004, title = {Ground-state degeneracy of non-Abelian topological phases from coupled wires}, journal = {Phys. Rev. B}, volume = {99}, number = {24}, year = {2019}, month = {JUN 20}, pages = {245138}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {We construct a family of two-dimensional non-Abelian topological phases from coupled wires using a non-Abelian bosonization approach. We then demonstrate how to determine the nature of the non-Abelian topological order (in particular, the anyonic excitations and the topological degeneracy on the torus) realized in the resulting gapped phases of matter. This paper focuses on the detailed case study of a coupled-wire realization of the bosonic su(2)(2) Moore-Read state, but the approach we outline here can be extended to general bosonic su(2)(k) topological phases described by non-Abelian Chern-Simons theories. We also discuss possible generalizations of this approach to the construction of three-dimensional non-Abelian topological phases.}, issn = {2469-9950}, doi = {10.1103/PhysRevB.99.245138}, author = {Iadecola, Thomas and Neupert, Titus and Chamon, Claudio and Mudry, Christopher} } @article { ISI:000448756700003, title = {Generation of a Lattice of Spin-Orbit Beams via Coherent Averaging}, journal = {PHYSICAL REVIEW LETTERS}, volume = {121}, number = {18}, year = {2018}, month = {OCT 30}, pages = {183602}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.121.183602}, author = {Sarenac, D. and Cory, D. G. and Nsofini, J. and Hincks, I. and Miguel, P. and Arif, M. and Clark, Charles W. and Huber, M. G. and Pushin, D. A.} } @article { ISI:000448973100018, title = {Giant anomalous Nernst effect and quantum-critical scaling in a ferromagnetic semimetal}, journal = {NATURE PHYSICS}, volume = {14}, number = {11}, year = {2018}, month = {NOV}, pages = {1119+}, issn = {1745-2473}, doi = {10.1038/s41567-018-0225-6}, author = {Sakai, Akito and Mizuta, Yo Pierre and Nugroho, Agustinus Agung and Sihombing, Rombang and Koretsune, Takashi and Suzuki, Michi-To and Takemori, Nayuta and Ishii, Rieko and Nishio-Hamane, Daisuke and Arita, Ryotaro and Goswami, Pallab and Nakatsuji, Satoru} } @article { ISI:000441010300002, title = {Global phase diagram and momentum distribution of single-particle excitations in Kondo insulators}, journal = {PHYSICAL REVIEW B}, volume = {98}, number = {8}, year = {2018}, month = {AUG 7}, pages = {085110}, issn = {2469-9950}, doi = {10.1103/PhysRevB.98.085110}, author = {Pixley, J. H. and Yu, Rong and Paschen, Silke and Si, Qimiao} } @article { ISI:000445057800002, title = {Global Phase Diagram of a Dirty Weyl Liquid and Emergent Superuniversality}, journal = {PHYSICAL REVIEW X}, volume = {8}, number = {3}, year = {2018}, month = {SEP 19}, pages = {031076}, issn = {2160-3308}, doi = {10.1103/PhysRevX.8.031076}, author = {Roy, Bitan and Slager, Robert-Jan and Juricic, Vladimir} } @article {ISI:000402483300015, title = {Global Phase Diagram of a Three-Dimensional Dirty Topological Superconductor}, journal = {PHYSICAL REVIEW LETTERS}, volume = {118}, number = {22}, year = {2017}, month = {JUN 1}, pages = {227002}, publisher = {AMER PHYSICAL SOC}, type = {Article}, abstract = {We investigate the phase diagram of a three-dimensional, time-reversal symmetric topological superconductor in the presence of charge impurities and random s-wave pairing. Combining complimentary field theoretic and numerical methods, we show that the quantum phase transition between two topologically distinct paired states (or thermal insulators), described by thermal Dirac semimetal, remains unaffected in the presence of sufficiently weak generic randomness. At stronger disorder, however, these two phases are separated by an intervening thermal metallic phase of diffusive Majorana fermions. We show that across the insulator-insulator and metal-insulator transitions, normalized thermal conductance displays single parameter scaling, allowing us to numerically extract the critical exponents across them. The pertinence of our study in strong spin-orbit coupled, three-dimensional doped narrow gap semiconductors, such as CuxBi2Se3, is discussed.}, \%\%Address = {ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.118.227002}, author = {Roy, Bitan and Alavirad, Yahya and Sau, Jay D.} } @article {4468, title = {Geometrical Pumping with a Bose-Einstein Condensate}, journal = {Phys. Rev. Lett.}, volume = {116}, year = {2016}, month = {05/2016}, pages = {200402}, abstract = {We realized a quantum geometric {\textquotedblleft}charge{\textquotedblright} pump for a Bose-Einstein condensate (BEC) in the lowest Bloch band of a novel bipartite magnetic lattice. Topological charge pumps in filled bands yield quantized pumping set by the global{\textemdash}topological{\textemdash}properties of the bands. In contrast, our geometric charge pump for a BEC occupying just a single crystal momentum state exhibits nonquantized charge pumping set by local{\textemdash}geometrical{\textemdash}properties of the band structure. Like topological charge pumps, for each pump cycle we observed an overall displacement (here, not quantized) and a temporal modulation of the atomic wave packet{\textquoteright}s position in each unit cell, i.e., the polarization.

}, doi = {10.1103/PhysRevLett.116.200402}, url = {http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.200402}, author = {Lu, H and Schemmer, M and Aycock, L M and Genkina, D and Sugawa, S and Ian B Spielman} } @article { ISI:000358928600002, title = {Gauge matters: observing the vortex-nucleation transition in a Bose condensate}, journal = {NEW JOURNAL OF PHYSICS}, volume = {17}, year = {2015}, month = {JUN 18}, pages = {065016}, issn = {1367-2630}, doi = {10.1088/1367-2630/17/6/065016}, author = {LeBlanc, L. J. and Jimenez-Garcia, K. and Williams, R. A. and Beeler, M. C. and Phillips, W. D. and Ian B Spielman} } @article { ISI:000360894300012, title = {Gigantic Surface Lifetime of an Intrinsic Topological Insulator}, journal = {PHYSICAL REVIEW LETTERS}, volume = {115}, number = {11}, year = {2015}, month = {SEP 9}, pages = {116801}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.115.116801}, author = {Neupane, Madhab and Xu, Su-Yang and Ishida, Yukiaki and Jia, Shuang and Fregoso, Benjamin M. and Liu, Chang and Belopolski, Ilya and Bian, Guang and Alidoust, Nasser and Durakiewicz, Tomasz and Victor M Galitski and Shin, Shik and Cava, Robert J. and Hasan, M. Zahid} } @article { ISI:000341258500007, title = {Generalized Eilenberger theory for Majorana zero-mode-carrying disordered p-wave superconductors}, journal = {PHYSICAL REVIEW B}, volume = {90}, number = {6}, year = {2014}, month = {AUG 27}, issn = {1098-0121}, doi = {10.1103/PhysRevB.90.064516}, author = {Hui, Hoi-Yin and Sau, Jay D. and S. Das Sarma} } @article { ISI:000344903500011, title = {Gold Nanorods with Sub-Nanometer Separation using Cucurbit{[}n]uril for SERS Applications}, journal = {SMALL}, volume = {10}, number = {21}, year = {2014}, month = {NOV 12}, pages = {4298-4303}, issn = {1613-6810}, doi = {10.1002/smll.201401063}, author = {Jones, Samuel T. and Taylor, Richard W. and Esteban, Ruben and Abo-Hamed, Enass K. and Bomans, Paul H. H. and Sommerdijk, Nico A. J. M. and Javier Aizpurua and Baumberg, Jeremy J. and Scherman, Oren A.} } @article { ISI:000339122700004, title = {Ground state of graphene heterostructures in the presence of random charged impurities}, journal = {PHYSICAL REVIEW B}, volume = {90}, number = {3}, year = {2014}, month = {JUL 8}, issn = {1098-0121}, doi = {10.1103/PhysRevB.90.035406}, author = {Rodriguez-Vega, Martin and Fischer, Jonathan and S. Das Sarma and Rossi, E.} } @conference { ISI:000355262505148, title = {Generation of Photon-Number States Using Repetitive Parametric Downconversion and Conditional Measurement}, booktitle = {2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)}, series = {Conference on Lasers and Electro-Optics}, year = {2013}, note = {Conference on Lasers and Electro-Optics (CLEO), San Jose, CA, JUN 09-14, 2013}, isbn = {978-1-55752-973-2}, issn = {2160-9020}, author = {B. L. Glebov and J. Fan and Migdall, A.} } @conference { ISI:000323425900005, title = {Gigahertz-gated InGaAs SPAD system with avalanche charge sensitivity approaching the fundamental limit}, booktitle = {ADVANCED PHOTON COUNTING TECHNIQUES VII}, series = {Proceedings of SPIE}, volume = {8727}, year = {2013}, note = {Conference on Advanced Photon Counting Techniques VII, Baltimore, MD, MAY 01-02, 2013}, isbn = {978-0-8194-9518-1}, issn = {0277-786X}, doi = {10.1117/12.2016087}, author = {Restelli, Alessandro and Bienfang, Joshua C. and Migdall, Alan L.}, editor = {Itzler, MA and Campbell, JC} } @article {2399, title = {Global Inequality in Energy Consumption from 1980 to 2010}, journal = {Entropy}, volume = {15}, year = {2013}, month = {12/2013}, pages = {5565-5579}, doi = {10.3390/e15125565}, author = {Scott Lawrence and Qin Liu and Victor M Yakovenko} } @article { ISI:000323481000003, title = {Gradient echo memory in an ultra-high optical depth cold atomic ensemble}, journal = {NEW JOURNAL OF PHYSICS}, volume = {15}, year = {2013}, month = {AUG 23}, issn = {1367-2630}, doi = {10.1088/1367-2630/15/8/085027}, author = {Sparkes, B. M. and Bernu, J. and Hosseini, M. and Geng, J. and Glorieux, Q. and Altin, P. A. and Lam, P. K. and Robins, N. P. and Buchler, B. C.} } @article { ISI:000310196300006, title = {Gate-tunable quantum transport in double-layer graphene}, journal = {PHYSICAL REVIEW B}, volume = {86}, number = {16}, year = {2012}, month = {OCT 25}, issn = {1098-0121}, doi = {10.1103/PhysRevB.86.165442}, author = {Kechedzhi, K. and Hwang, E. H. and S. Das Sarma} } @article { ISI:000312486800001, title = {Generation of pulsed bipartite entanglement using four-wave mixing}, journal = {NEW JOURNAL OF PHYSICS}, volume = {14}, year = {2012}, month = {DEC 14}, issn = {1367-2630}, doi = {10.1088/1367-2630/14/12/123024}, author = {Glorieux, Quentin and Clark, Jeremy B. and Corzo, Neil V. and Lett, Paul D.} } @article {2400, title = {Global inequality recalculated and updated: the effect of new PPP estimates on global inequality and 2005 estimates}, journal = {J Econ Inequal}, volume = {10}, year = {2012}, doi = {10.1007/s10888-010-9155-y}, author = {Branko Milanovic} } @article { ISI:000308841300001, title = {Graphene on SrTiO3}, journal = {SOLID STATE COMMUNICATIONS}, volume = {152}, number = {19}, year = {2012}, month = {OCT}, pages = {1795-1799}, issn = {0038-1098}, doi = {10.1016/j.ssc.2012.07.011}, author = {S. Das Sarma and Li, Qiuzi} } @article {Cassidy2011, title = {Generalized Thermalization in an Integrable Lattice System}, journal = {Phys. Rev. Lett.}, volume = {106}, number = {14}, year = {2011}, month = {apr}, pages = {140405}, abstract = {After a quench, observables in an integrable system may not relax to the standard thermal values, but can relax to the ones predicted by the generalized Gibbs ensemble (GGE) [M. Rigol et al., Phys. Rev. Lett. 98, 050405 (2007)]. The GGE has been shown to accurately describe observables in various one-dimensional integrable systems, but the origin of its success is not fully understood. Here we introduce a microcanonical version of the GGE and provide a justification of the GGE based on a generalized interpretation of the eigenstate thermalization hypothesis, which was previously introduced to explain thermalization of nonintegrable systems. We study relaxation after a quench of one-dimensional hard-core bosons in an optical lattice. Exact numerical calculations for up to 10 particles on 50 lattice sites (\~{}10\^{}10 eigenstates) validate our approach.}, keywords = {2011, Multiple JQI Affil., Single Fellow}, issn = {0031-9007}, url = {http://arxiv.org/abs/1008.4794 http://prl.aps.org/abstract/PRL/v106/i14/e140405}, author = {Cassidy, Amy and Charles W Clark and Rigol, Marcos} } @article { ISI:000289229600001, title = {Generic Hubbard model description of semiconductor quantum-dot spin qubits}, journal = {PHYSICAL REVIEW B}, volume = {83}, number = {16}, year = {2011}, month = {APR 7}, issn = {1098-0121}, doi = {10.1103/PhysRevB.83.161301}, author = {Yang, Shuo and Wang, Xin and S. Das Sarma} } @article { ISI:000293702200001, title = {Gutzwiller-projected wave functions for the pseudogap state of underdoped high-temperature superconductors}, journal = {PHYSICAL REVIEW B}, volume = {84}, number = {6}, year = {2011}, month = {AUG 9}, issn = {1098-0121}, doi = {10.1103/PhysRevB.84.060503}, author = {Sensarma, Rajdeep and Victor M Galitski} } @article {Gerrits2010, title = {Generation of optical coherent-state superpositions by number-resolved photon subtraction from the squeezed vacuum}, journal = {Phys. Rev. A}, volume = {82}, number = {3}, year = {2010}, month = {sep}, keywords = {2010, Single Fellow}, issn = {1050-2947}, url = {http://pra.aps.org/abstract/PRA/v82/i3/e031802}, author = {Gerrits, Thomas and Glancy, Scott and Clement, Tracy and Calkins, Brice and Adriana E Lita and Miller, Aaron and Alan L Migdall and Sae Woo Nam and Mirin, Richard and Knill, Emanuel} } @article {Sau2010b, title = {Generic New Platform for Topological Quantum Computation Using Semiconductor Heterostructures}, journal = {Phys. Rev. Lett.}, volume = {104}, number = {4}, year = {2010}, month = {jan}, pages = {040502}, keywords = {2010, Single Fellow}, issn = {0031-9007}, url = {http://prl.aps.org/abstract/PRL/v104/i4/e040502}, author = {Jay D Sau and Roman M Lutchyn and Tewari, Sumanta and S. Das Sarma} } @article { ISI:000263389500057, title = {Giant Nernst Effect due to Fluctuating Cooper Pairs in Superconductors}, journal = {PHYSICAL REVIEW LETTERS}, volume = {102}, number = {6}, year = {2009}, month = {FEB 13}, issn = {0031-9007}, doi = {10.1103/PhysRevLett.102.067001}, author = {Serbyn, M. N. and Skvortsov, M. A. and Varlamov, A. A. and Victor M Galitski} } @article { ISI:000269638900089, title = {Graphene magnetoresistance in a parallel magnetic field: Spin polarization effect}, journal = {PHYSICAL REVIEW B}, volume = {80}, number = {7}, year = {2009}, month = {AUG}, issn = {1098-0121}, doi = {10.1103/PhysRevB.80.075417}, author = {Hwang, E. H. and S. Das Sarma} } @article {Lutchyn2008, title = {Gauge-invariant electromagnetic response of a chiral px+ipy superconductor}, journal = {Phys. Rev. B}, volume = {77}, number = {14}, year = {2008}, month = {apr}, keywords = {2008, Single Fellow}, issn = {1098-0121}, url = {http://prb.aps.org/abstract/PRB/v77/i14/e144516}, author = {Roman M Lutchyn and Nagornykh, Pavel and Victor M Yakovenko} } @article {2471, title = {Generating entanglement between quantum dots with different resonant frequencies based on dipole-induced transparency}, journal = {Phys Rev. A}, volume = {78}, year = {2008}, month = {11/2008}, pages = {052321}, doi = {10.1103/PhysRevA.78.052321}, author = {Deepak Sridharan and Edo Waks} } @article {Chen2008a, title = {Generation of high-flux hyperentangled photon pairs using a microstructure-fiber Sagnac interferometer}, journal = {Phys. Rev. A}, volume = {77}, number = {5}, year = {2008}, month = {may}, keywords = {2008, Single Fellow}, issn = {1050-2947}, url = {http://pra.aps.org/abstract/PRA/v77/i5/e053812}, author = {Jun Chen and Jingyun Fan and Matthew Eisaman and Alan L Migdall} } @article {Boyer2008, title = {Generation of Spatially Broadband Twin Beams for Quantum Imaging}, journal = {Phys. Rev. Lett.}, volume = {100}, number = {14}, year = {2008}, month = {apr}, keywords = {2008, Single Fellow}, issn = {0031-9007}, url = {http://prl.aps.org/abstract/PRL/v100/i14/e143601}, author = {Vincent Boyer and Alberto M Marino and Paul D Lett} } @article { ISI:000260574300067, title = {Ginzburg-Landau theory for the conical cycloid state in multiferroics: Applications to CoCr2O4}, journal = {PHYSICAL REVIEW B}, volume = {78}, number = {14}, year = {2008}, month = {OCT}, issn = {1098-0121}, doi = {10.1103/PhysRevB.78.144426}, author = {Zhang, Chuanwei and Tewari, Sumanta and Toner, John and S. Das Sarma} } @article { ISI:000260574300068, title = {Goldstone modes and electromagnon fluctuations in the conical cycloid state of a multiferroic}, journal = {PHYSICAL REVIEW B}, volume = {78}, number = {14}, year = {2008}, month = {OCT}, issn = {1098-0121}, doi = {10.1103/PhysRevB.78.144427}, author = {Tewari, Sumanta and Zhang, Chuanwei and Toner, John and S. Das Sarma} } @article {Tang2008, title = {Green fluorescent protein in inertially injected aqueous nanodroplets}, journal = {Langmuir}, volume = {24}, number = {9}, year = {2008}, month = {may}, pages = {4975{\textendash}8}, publisher = {American Chemical Society}, abstract = {We inertially inject and study the contents of optically trappable aqueous nanodroplets (hydrosomes) emulsified in a perfluorinated matrix. A new piezoelectric actuated device for production of single hydrosomes on demand is introduced. Hydrosomes containing enhanced green fluorescent protein (EGFP) were injected, optically trapped, and held at the focus of an excitation laser in a confocal microscope, and single-molecule photobleaching events were observed. The rotational diffusion time of EGFP in trapped hydrosomes was measured using time-resolved fluorescence anisotropy. In free solution, the mean rotational diffusion time was determined to be 13.8 +/- 0.1 ns at 3 microM and 14.0 +/- 0.2 ns at 10 microM. In hydrosomes, the mean rotational diffusion time was similar and determined to be 12.6 +/- 1.0 ns at 3 microM and 15.5 +/- 1.6 ns at 10 microM. We conclude that the rotational motion inside the nanodroplets is consistent with rotation in free solution and that the protein therefore does not aggregate at the water-oil interface. Protein can be confined in hydrosomes with high efficiency using this technique, which provides an alternative to surface attachment or lipid encapsulation and opens up new avenues of research using single molecules contained in fluid nanovolumes.}, keywords = {2008, Green Fluorescent Proteins, Green Fluorescent Proteins: chemistry, Nanostructures, Nanostructures: chemistry, Single Fellow, Spectrophotometry, Thermodynamics}, issn = {0743-7463}, url = {http://dx.doi.org/10.1021/la800329k}, author = {Tang, Jianyong and Ana M Jofre and Lowman, Geoffrey M. and Rani B Kishore and Joseph E Reiner and Kristian Helmerson and Goldner, Lori S. and Greene, Mark E.} } @article {Rossi2008, title = {Ground State of Graphene in the Presence of Random Charged Impurities}, journal = {Phys. Rev. Lett.}, volume = {101}, number = {16}, year = {2008}, month = {oct}, keywords = {2008, Single Fellow}, issn = {0031-9007}, url = {http://prl.aps.org/abstract/PRL/v101/i16/e166803}, author = {Enrico Rossi and S. Das Sarma} } @article {Helmerson2007a, title = {Generating persistent currents states of atoms using orbital angular momentum of photons}, journal = {Nuclear Physics A}, volume = {790}, number = {1-4}, year = {2007}, month = {jun}, pages = {705c{\textendash}712c}, keywords = {2007, Multiple Fellows}, issn = {03759474}, url = {http://adsabs.harvard.edu/abs/2007NuPhA.790..705H}, author = {Kristian Helmerson and Andersen, M.F. and Changhyun Ryu and Pierre Clad{\'e} and Vasant Natarajan and Alipasha Vaziri and William D Phillips} }