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arXiv:quant-ph/0308024 · Applied Physics B

Time-resolved two-photon quantum interference

T. Legero, Tatjana Wilk, Axel Kuhn, G. Rempe

Published Dec 1, 2003• 183 citations
arXivHTMLPDF
DOI
10.1007/s00340-003-1337-x

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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.