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Annals of the New York Academy of Sciences

Statistics of Entangled‐Photon Coincidences in Parametric Downconversiona

Todd S. Larchuk, Malvin Carl Teich, Bahaa E. A. Saleh

Published Apr 1, 1995• 18 citations
Publisher
DOI
10.1111/j.1749-6632.1995.tb39009.x

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We present a full triple-coincidence analysis of photon-pair states generated by spontaneous parametric down-conversion. By increasing the coherence time of the source with the help of an intracavity setup, our measurements are not spoiled by detection time jitter. Signal-idler, but also thermal signal-signal, correlations are clearly resolved in this regime. Via introduction of an artificial coincidence window, we discuss in detail the transition to the previously studied cases where typically no single-arm correlation is observed. We investigate the heralded antibunching characteristics to show that in our system further studies of continuously generated photon states, possibly higher-photon-number entangled states, can be performed with respect to their (non)applicability in quantum information tasks.