Role of indistinguishability and entanglement in Hong-Ou-Mandel interference and finite-bandwidth effects of frequency-entangled photons

authored by
Roy Barzel, Claus Laemmerzahl
Abstract

We investigate the relation between indistinguishability and quantum entanglement in Hong-Ou-Mandel interference experiments theoretically and relate these quantum mechanical principles to the theorem of entanglement monogamy. Employing Glauber's theory of quantum coherence we compute the detection statistics in HOM interference of frequency-entangled photons and find an additional term in the coincidence detection probability, which is related to the spectral indistinguishability of the considered photons that arises from finite-bandwidth effects and therefore is relevant in the limit of low-frequency separations or large single-photon bandwidths. Compared to previous work in that context we treat all photonic degrees of freedom on equal footing.

External Organisation(s)
Center of Applied Space Technology and Microgravity (ZARM)
Type
Article
Journal
Physical Review A
Volume
107
ISSN
2469-9926
Publication date
09.03.2023
Publication status
Published
Peer reviewed
Yes
Electronic version(s)
https://doi.org/10.1103/PhysRevA.107.032205 (Access: Unknown)