Coarse-grained homodyne detection with as few as two bins enables phase estimation beyond the standard quantum limit with Heisenberg scaling in a squeezed-light interferometer.
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A review covering frequentist and Bayesian parameter estimation, multiparameter cases, noisy and indefinite-causal-order channels, error-correction strategies, quantum Fisher information, and applications from many-body sensors to atomic clocks and imaging.
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Quantum Metrology under Coarse-Grained Measurement
Coarse-grained homodyne detection with as few as two bins enables phase estimation beyond the standard quantum limit with Heisenberg scaling in a squeezed-light interferometer.
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Journey in quantum metrology and sensing from foundations to applications: a review
A review covering frequentist and Bayesian parameter estimation, multiparameter cases, noisy and indefinite-causal-order channels, error-correction strategies, quantum Fisher information, and applications from many-body sensors to atomic clocks and imaging.