Generation of a pulsed polarization entangled-photon pair via a two-crystal geometry
- Imai Quantum Computation and Information Project, NEC Tsukuba Laboratories, ERATO, Japan Science and Technology Corporation (JST), Fundamental Research Laboratories, NEC, 34 Miyukigaoka, Tsukuba, Ibaraki 305-8501 (Japan)
In this paper, we report a scheme for the generation of a pulsed polarization entangled-photon pair in a two-crystal geometry. These two crystals are oriented with their optical axes aligned in a perpendicular plane, stacked in the vertical direction. The stack direction and the pass direction of pump laser are orthogonal. This scheme has some advantages compared to other schemes: no time compensation or narrow-band filter is needed, it is insensitive to the thickness of the nonlinear crystal. As a demonstration of its workability, we get more than 86% high visibility of two-photon quantum interference experimentally for the polarization variable, without any time compensation and narrow-band filter. This scheme may be a useful technique for the generation of a pulsed entangled-photon pair.
- OSTI ID:
- 20634022
- Journal Information:
- Physical Review. A, Vol. 67, Issue 4; Other Information: DOI: 10.1103/PhysRevA.67.043804; (c) 2003 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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