Multiensemble superradiance yields dark states with inter-ensemble entanglement whose covariance matrices in the large-N limit optimize multiparameter spin squeezing via the Rayleigh quotient of the squeezing matrix.
This relation directly determines whether the system can approach the quantum-metrological pre- cision limit set by the quantum Fisher information matrix (QFIM)
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Multiensemble Superradiance for Distributed Quantum Sensing
Multiensemble superradiance yields dark states with inter-ensemble entanglement whose covariance matrices in the large-N limit optimize multiparameter spin squeezing via the Rayleigh quotient of the squeezing matrix.