Parametrized protocol achieving the Heisenberg limit in the optical domain via dispersive atom-light interactions
arXiv:2010.14842 · doi:10.1016/j.rinp.2021.104159
Abstract
The strong and collective atom-light interactions in cavity-QED systems perform manifold benefits in quantum-enhanced measurements. Here, we study the time-reversal protocol that has been proposed to sense small displacements of the light field, and report the sensitivity of the scheme that could be speeded up to attain the Heisenberg limit (HL).We show the holonomic unitary parametrization process of the scheme and one only need to choose appropriate initial states to pursue the ultimate sensitivity. The scheme may pave an experimentally feasible way to achieve Heisenberg-limited metrology with nonclassical states.
20 pages,3 figures
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