Sequential weak measurements on a quantum harmonic oscillator enable simultaneous quadrature estimation, with backaction increasing information for some strengths and post-processing extending dynamic range while improving decoherence robustness.
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Sequential Measurements as a Resource for Quantum Metrology
Sequential weak measurements on a quantum harmonic oscillator enable simultaneous quadrature estimation, with backaction increasing information for some strengths and post-processing extending dynamic range while improving decoherence robustness.