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Conferences > QUANTUM > 2023 > QTh3A > QTh3A.6

Practical Tests for Sub-Rayleigh Source Discrimination with Imperfect Demultiplexers

Konrad Schlichtholz, Tomasz Linowski, Mattia Walschaers, Nicolas Treps, Łukasz Rudnicki, and Giacomo Sorelli

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Abstract

We show that quantum-optimal tests for discriminating between one and two light sources via spatial-mode demultiplexing become as good as flipping a coin in the presence of arbitrarily small imperfections, and we develop practical alternatives.

© 2023 The Author(s)

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