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Fermionic Correlation Functions from Randomized Measurements in Programmable Atomic Quantum Devices.
P. Naldesi, A. Elben, A. Minguzzi, D. Cl'ement, P. Zoller, B. Vermersch·May 2, 2022·DOI: 10.1103/PhysRevLett.131.060601
PhysicsMedicine
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Abstract
We provide an efficient randomized measurement protocol to estimate two- and four-point fermionic correlations in ultracold atom experiments. Our approach is based on combining random atomic beam splitter operations, which can be realized with programmable optical landscapes, with high-resolution imaging systems such as quantum gas microscopes. We illustrate our results in the context of the variational quantum eigensolver algorithm for solving quantum chemistry problems.