Title | Measuring the Renyi entropy of a two-site Fermi-Hubbard model on a trapped ion quantum computer |
Publication Type | Journal Article |
Year of Publication | 2018 |
Authors | N.. M. Linke, S.. Johri, C.. Figgatt, K.. A. Landsman, A.. Y. Matsuura, and C.. Monroe |
Journal | PHYSICAL REVIEW A |
Volume | 98 |
Pagination | 052334 |
Date Published | NOV 26 |
ISSN | 2469-9926 |
Abstract | The efficient simulation of correlated quantum systems is a promising near-term application of quantum computers. Here, we present a measurement of the second Renyi entropy of the ground state of the two-site Fermi-Hubbard model on a five-qubit programmable quantum computer based on trapped ions. Our work illustrates the extraction of a nonlinear characteristic of a quantum state using a controlled-swap gate acting on two copies of the state. This scalable measurement of entanglement on a universal quantum computer will, with more qubits, provide insights into many-body quantum systems that are impossible to simulate on classical computers. |
DOI | 10.1103/PhysRevA.98.052334 |