2024/04/12 by Christian Drago, Agata M. Brańczyk · 1 citation
Computer Science · Engineering · Physics and Astronomy · #Optical Network Technologies #Quantum Information and Cryptography #Quantum optics and atomic interactions
paper · pdf · doi:10.1139/cjp-2023-0312
openalex publication_date 2024/04/12 · crossref created 2024/04/12 · openalex created_date 2024/04/13 · crossref issued 2024/08/01 · crossref published 2024/08/01 · crossref published-print 2024/08/01 · crossref deposited 2025/07/02 · crossref indexed 2026/07/30 · openalex updated_date 2026/08/02
Hong–Ou–Mandel interference is most dramatic when the photons involved are perfectly indistinguishable. Departures from this ideal scenario, however, are also interesting and useful to consider. In this tutorial, we analyze scenarios where the degree of the photons’ distinguishability depends on their spectral and temporal “overlap”. We first consider photons that are both spectrally pure and spectrally separable. We then generalize this to include spectrally entangled (but still spectrally pure) photons and spectrally mixed (but still spectrally separable) photons. This tutorial equips researchers with tools for a deeper understanding of this interesting phenomenon and its various applications.