Exact signal correlators in continuous quantum measurements
arXiv:1712.05725 · doi:10.1103/PhysRevA.98.010104
Abstract
This article provides an exact formula for the signal n-point correlation functions of detectors continuously measuring an arbitrary quantum system, in the presence of detection imperfections. The derivation uses only continuous stochastic calculus techniques, but the final result is easily understood from a discrete picture of repeated interactions with qubits or from a parallel with continuous matrix product states. This result provides a crude yet efficient a way to estimate system parameters directly from experimental data, without requiring non-linear state reconstruction.
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- Error correcting Bacon-Shor code with continuous measurement of noncommuting operators
- General quantum-classical dynamics as measurement based feedback
- Quantum polyspectra for modeling and evaluating quantum transport measurements: A unifying approach to the strong and weak measurement regime
- Correlators exceeding one in continuous measurements of superconducting qubits
- Random-time quantum measurements
- Correlation functions for realistic continuous quantum measurement
- Making Every Photon Count: A Quantum Polyspectra Approach to the Dynamics of Blinking Quantum Emitters at Low Photon Rates Without Binning