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arXiv · 2212.07708

Sensitivity of quantum-enhanced interferometers

Dariya Salykina·Farid Ya. Khalili
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Abstract

We consider various configuration of quantum-enhanced interferometers, both linear (SU(2)) and non-linear (SU(1,1)) ones, as well as hybrid SU(2)/SU(1,1) schemes. Using the unified modular approach, based on the Quantum Cramer-Rao bound, we show that in all practical cases, their sensitivity is limited by the same equations (95) or (97) which first appeared in the pioneering work by C.Caves [Phys.Rev.D 23, 1693 (1981)].

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Dariya Salykina, Farid Ya. Khalili. 2022-12-15. Sensitivity of quantum-enhanced interferometers. https://arxiv.org/abs/2212.07708

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