Time-resolved two-photon interference of weak coherent pulses

The observation of the Hong-Ou-Mandel (HOM)-type two-photon interference (TPI) has played an important role in the development of photonic quantum technologies. The time-resolved coincidence-detection technique has been effectively used to identify and characterize the TPI phenomena of long-coherenc...

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Bibliographic Details
Published in:arXiv.org 2021-06
Main Authors: Kim, Heonoh, Kwon, Osung, Han Seb Moon
Format: Article
Language:English
Subjects:
Interference
Photons
Pulse duration
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Summary:The observation of the Hong-Ou-Mandel (HOM)-type two-photon interference (TPI) has played an important role in the development of photonic quantum technologies. The time-resolved coincidence-detection technique has been effectively used to identify and characterize the TPI phenomena of long-coherence optical fields. Here, we report on the experimental demonstration of the TPI of two phase-randomized weak coherent pulses with time-resolved coincidence detection. The mutual coherence time between the two weak coherent lights is determined by applying a frequency noise to one of the two interfering lights. We analyze the HOM-type TPI-fringe visibility according to the ratio of the coherence time to the pulse duration.
ISSN:2331-8422
DOI:10.48550/arxiv.2106.02434