Sensitivity Limits for Multiparameter Quantum Metrology

M. Gessner, L. Pezzè, A. Smerzi
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Abstract

We present sensitivity limits for a multimode interferometer as matrix bounds for the covariance matrix. Quantum strategies to improve the precision beyond classical limits may consist in entanglement among the modes or among the particles.
多参数量子计量的灵敏度极限
我们提出了多模干涉仪的灵敏度极限作为协方差矩阵的矩阵界。超越经典极限提高精度的量子策略可能存在于模式之间或粒子之间的纠缠。
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