Measuring the Renyi entropy of a two-site Fermi-Hubbard model on a trapped ion quantum computer
Abstract
The efficient simulation of correlated quantum systems is the most 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 -qubit programmable quantum computer based on trapped ions. Our work illustrates the extraction of a non-linear 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.
Keywords
Cite
@article{arxiv.1712.08581,
title = {Measuring the Renyi entropy of a two-site Fermi-Hubbard model on a trapped ion quantum computer},
author = {Norbert M. Linke and Sonika Johri and Caroline Figgatt and Kevin A. Landsman and Anne Y. Matsuura and Christopher Monroe},
journal= {arXiv preprint arXiv:1712.08581},
year = {2018}
}
Comments
main text: 5 pages, 4 figures, 2 F-H systems, 2 qubits each, 1 ancilla; supplementary material: 4 pages, 7 figures