Heisenberg-limited metrology with perturbing interactions Journal Article

• Best Open Access

Overview

abstract

• We show that it is possible to perform Heisenberg-limited metrology on GHZ-like states, in the presence of generic spatially local, possibly strong interactions during the measurement process. An explicit protocol, which relies on single-qubit measurements and feedback based on polynomial-time classical computation, achieves the Heisenberg limit. In one dimension, matrix product state methods can be used to perform this classical calculation, while in higher dimensions the cluster expansion underlies the efficient calculations. The latter approach is based on an efficient classical sampling algorithm for short-time quantum dynamics, which may be of independent interest.

CU Boulder Authors

• Lucas, Andrew James

publication date

• March 28, 2024

has restriction

• gold

Date in CU Experts

• February 1, 2025 10:37 AM

Full Author List

• Yin C; Lucas A

author count

• 2

published in

• Quantum  Journal

Other Profiles

Electronic International Standard Serial Number (EISSN)

• 2521-327X

Digital Object Identifier (DOI)

• https://doi.org/10.22331/q-2024-03-28-1303

Additional Document Info

start page

• 1303

end page

• 1303

volume

• 8

number

• 1303