One-Photon and Two-Photon Double-Slit Interferences in Spontaneous and Stimulated Parametric Down-Conversions

Details One-Photon and Two-Photon Double-Slit Interferences in Spontaneous and Stimulated Parametric Down-Conversions One-Photon and Two-Photon Double-Slit Interferences in Spontaneous and Stimulated Parametric Down-Conversions

2004-01-20

arxiv.org/abs/quant-ph/0401109v1

Physics

Quantum Physics

10 pages, 6 figures

Scientific paper

10.1140/epjd/e2005-00030-0

We theoretically discuss one-photon and two-photon double-slit interferences for spontaneous and stimulated parametric down-conversions. We show that the two-photon sub-wavelength interference can exist in a general spontaneous parametric down-conversion (SPDC) for both type I and type II crystals. We propose an alternative way to observe sub-wavelength interference by a joint-intensity measurement which occurs for only type I crystal in a higher gain of SPDC. When a signal beam injects into the crystal, it may create two interference patterns by two stimulated down-converted beams, showing no sub-wavelength interference effect.

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