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arXiv · 2105.11421

Scaling laws for the sensitivity enhancement of non-Gaussian spin states

Y. Baamara·A. Sinatra·M. Gessner
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Abstract

We identify the large-$N$ scaling of the metrological quantum gain offered by over-squeezed spin states that are accessible by one-axis-twisting, as a function of the preparation time. We further determine how the scaling is modified by relevant decoherence processes and predict a discontinuous change of the quantum gain at a critical preparation time that depends on the noise. Our analytical results provide recipes for optimal and feasible implementations of quantum enhancements with non-Gaussian spin states in existing experiments, well beyond the reach of spin squeezing.

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Y. Baamara, A. Sinatra, M. Gessner. 2021-05-24. Scaling laws for the sensitivity enhancement of non-Gaussian spin states. https://doi.org/10.1103/physrevlett.127.160501

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