A numerically efficient method is established to determine the quantum Cramer-Rao bound for continuously monitored quantum sensors subject to general environmental noise.
The QFI can be expressed as tr[Ξ( θ)L2], with L the symmetric logarithmic derivative (SLD) op- erator defined via ∂θΞ = ( LΞ + ΞL)/2
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Quantum Cramer-Rao Precision Limit of Noisy Continuous Sensing
A numerically efficient method is established to determine the quantum Cramer-Rao bound for continuously monitored quantum sensors subject to general environmental noise.