Direct measurement of heralded single-photon statistics from a parametric down-conversion source

Journal Article · Sat Jan 15 04:00:00 EST 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.013802· OSTI ID:21537044

Hoeckel, David; Koch, Lars; Benson, Oliver ^[1]

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1. Nano Optics Group, Institute of Physics, Humboldt-Universitaet zu Berlin, Newtonstrasse 15, 12489 Berlin (Germany)

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.

• OSTI ID: 21537044
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 1 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
CONVERSION
CORRELATIONS
ELEMENTARY PARTICLES
INFORMATION
MASSLESS PARTICLES
MATHEMATICS
MEASURING METHODS
PHOTONS
QUANTUM ENTANGLEMENT
QUANTUM INFORMATION
SIGNALS
STATISTICS