A robust hybrid receiver for binary phase-shift keying discrimination in the presence of phase noise
arXiv:2312.16493 · doi:10.1142/S0219749924500084
Abstract
We address the problem of coherent state discrimination in the presence of phase diffusion. We investigate the role of the hybrid near-optimum receiver (HYNORE) we proposed in [J. Opt. Soc. Am. B 40, 705-714 (2023)] in the task of mitigating the noise impact. We prove the HYNORE to be a robust receiver, outperforming the displacement photon-number-resolving (DPNR) receiver and beating the standard quantum limit in particular regimes. We introduce the maximum tolerable phase noise as a figure of merit for the receiver robustness and show that HYNORE increases its value with respect to the DPNR receiver.
arXiv comment15 pages, 10 figures
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