Experimental analysis explores quantum state fidelity in squeezed coherent states with imperfect detectors, suggesting crucial insights for quantum technologies.
A method for quantum state estimation using nonideal photon detection devices has been developed. Using the example of squeezed coherent states, we study the influence of detector efficiency and “dead time” on the fidelity of quantum-state reconstruction for photon-number-resolving (PNR) detectors.
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Dmitriev et al. (2025) studied this question.
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