Transverse coherence length of down-converted light in the two-photon state
- 1 February 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 59 (2) , 1608-1614
- https://doi.org/10.1103/physreva.59.1608
Abstract
Measurements of the Young interference pattern for down-converted light in the two-photon state are performed. Light in the two-photon state is generated at the output of a Hong-Ou-Mandel balanced interferometer. Two-photon interference patterns with visibilities up to 100% are obtained. Visibilities of the two-photon interference patterns as a function of the double-slit separation are obtained and show that the transverse coherence length of the two-photon light is much larger than the one-photon beam for the distances considered in the experiment.Keywords
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