Sensitivity of quantum-enhanced interferometers

2022/12/15 by Salykina, Dariya, Khalili, Farid Ya. · 3 citations
#FOS: Physical sciences #Quantum Physics (quant-ph)

paper · doi:10.48550/arxiv.2212.07708

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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