Heralding Single Photons Without Spectral Factorability

Details Heralding Single Photons Without Spectral Factorability Heralding Single Photons Without Spectral Factorability

2010-08-16

arxiv.org/abs/1008.2792v1

PhysRevA.82.043826 (2010)

Physics

Quantum Physics

7 pages, 5 figures

Scientific paper

10.1103/PhysRevA.82.043826

Recent efforts to produce single photons via heralding have relied on creating spectrally factorable two-photon states in order to achieve both high purity and high production rate. Through a careful multimode analysis, we find, however, that spectral factorability is not necessary. Utilizing single-mode detection, a similar or better performance can be achieved with non-factorable states. This conclusion rides on the fact that even when using a broadband filter, a single-mode measurement can still be realized, as long as the coherence time of the triggering photons exceeds the measurement window of the on/off detector.

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