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Quantum Interference by Two Temporally Distinguishable Pulses
Author(s) -
Kim YoonHo,
Chekhova Maria V.,
Kulik Sergei P.,
Shih Yanhua,
Keller Timothy E.,
Rubin Morton H.
Publication year - 2000
Publication title -
fortschritte der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.469
H-Index - 71
eISSN - 1521-3978
pISSN - 0015-8208
DOI - 10.1002/(sici)1521-3978(200005)48:5/7<505::aid-prop505>3.0.co;2-w
Subject(s) - interference (communication) , pulse (music) , physics , visibility , laser , photon , optics , amplitude , quantum interference , quantum , quantum optics , quantum mechanics , telecommunications , computer science , channel (broadcasting) , detector
We report a two‐photon interference effect, in which the entangled photon pairs are generated from two laser pulses well‐separated in time. In a single pump pulse case, interference effects did not occur in our experimental scheme. However, by introducing a second pump pulse delayed in time, quantum interference was then observed. The visibility of the interference fringes shows a dependence on the delay time between two laser pulses. The results are explained in terms of indistinguishability of biphoton amplitudes which originates from two temporally separated laser pulses.