@article { ISI:000519631000004,
title = {Quantum Brownian motion of a particle from Casimir-Polder interactions},
journal = {Phys. Rev. A},
volume = {101},
number = {3},
year = {2020},
month = {MAR 13},
pages = {032507},
publisher = {AMER PHYSICAL SOC},
type = {Article},
abstract = {We study the fluctuation-induced dissipative dynamics of the quantized center-of-mass motion of a polarizable dielectric particle trapped near a surface. The particle{\textquoteright}s center of mass is treated as an open quantum system coupled to the electromagnetic field acting as its environment, with the resulting system dynamics described by a quantum Brownian motion master equation. The dissipation and decoherence of the particle{\textquoteright}s center of mass are characterized by the modified spectral density of the electromagnetic field that depends on surface losses and the strength of the classical trap field. Our results are relevant to experiments with levitated dielectric particles near surfaces, illustrating potential ways of mitigating fluctuation-induced decoherence while preparing such systems in macroscopic quantum states.},
issn = {2469-9926},
doi = {10.1103/PhysRevA.101.032507},
author = {Sinha, Kanupriya and Subasi, Yigit}
}
@article {ISI:000428598700001,
title = {Hardware-efficient fermionic simulation with a cavity-QED system},
journal = {NPJ QUANTUM INFORMATION},
volume = {4},
year = {2018},
month = {FEB 27},
pages = {16},
publisher = {NATURE PUBLISHING GROUP},
type = {Article},
abstract = {In digital quantum simulation of fermionic models with qubits, non-local maps for encoding are often encountered. Such maps require linear or logarithmic overhead in circuit depth which could render the simulation useless, for a given decoherence time. Here we show how one can use a cavity-QED system to perform digital quantum simulation of fermionic models. In particular, we show that highly nonlocal Jordan-Wigner or Bravyi-Kitaev transformations can be efficiently implemented through a hardware approach. The key idea is using ancilla cavity modes, which are dispersively coupled to a qubit string, to collectively manipulate and measure qubit states. Our scheme reduces the circuit depth in each Trotter step of the Jordan-Wigner encoding by a factor of N-2, comparing to the scheme for a device with only local connectivity, where N is the number of orbitals for a generic two-body Hamiltonian. Additional analysis for the Fermi-Hubbard model on an N x N square lattice results in a similar reduction. We also discuss a detailed implementation of our scheme with superconducting qubits and cavities.}, \%\%Address = {MACMILLAN BUILDING, 4 CRINAN ST, LONDON N1 9XW, ENGLAND},
issn = {2056-6387},
doi = {10.1038/s41534-018-0065-3},
author = {Zhu, Guanyu and Subasi, Yigit and Whitfield, James D. and Hafezi, Mohammad}
}
@article { ISI:000346615200001,
title = {Local convertibility of the ground state of the perturbed toric code},
journal = {PHYSICAL REVIEW B},
volume = {90},
number = {24},
year = {2014},
month = {DEC 17},
issn = {1098-0121},
doi = {10.1103/PhysRevB.90.245128},
author = {Santra, Siddhartha and Hamma, Alioscia and Cincio, Lukasz and Subasi, Yigit and Zanardi, Paolo and Amico, Luigi}
}