Demonstration of an optimal generalized quantum measurement for binary coherent states with photon counting

Francisco Elohim Becerra Chávez

doi:10.1117/12.2657710

9 March 2023 Demonstration of an optimal generalized quantum measurement for binary coherent states with photon counting

Francisco Elohim Becerra Chávez

Author Affiliations +

Proceedings Volume PC12447, Quantum Sensing, Imaging, and Precision Metrology; PC124472K (2023) https://doi.org/10.1117/12.2657710
Event: SPIE Quantum West, 2023, San Francisco, California, United States

Abstract

Quantum mechanics allows for the realization of optimized measurements based on photon counting for the discrimination of nonorthogonal coherent states able to surpass the conventional limits of detection, such as the homodyne and heterodyne limits. Such measurements have a large potential for increasing sensitivities and information transfer in communications and for information processing. In this talk I will describe our current work in the problem of generalized measurements for coherent state discrimination. We implement an optimal inconclusive measurement for binary coherent states [1], a non-projective measurement that allows for achieving the lowest probability of error for a given rate of inconclusive results. This measurement encompasses standard measurement paradigms for state discrimination, specifically minimum error and unambiguous discrimination, and allows to transition between them in an optimal way. [1] M. T. DiMario, F. E. Becerra, Npj Quantum Inf. 8 (1), 1-8.

Conference Presentation

Citation Download Citation

Francisco Elohim Becerra Chávez "Demonstration of an optimal generalized quantum measurement for binary coherent states with photon counting", Proc. SPIE PC12447, Quantum Sensing, Imaging, and Precision Metrology, PC124472K (9 March 2023); https://doi.org/10.1117/12.2657710

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