標題: Beamlike photon pairs entangled by a 2 x 2 fiber
作者: Lo, Hsin-Pin
Yabushita, Atsushi
Luo, Chih-Wei
Chen, Pochung
Kobayashi, Takayoshi
電子物理學系
Department of Electrophysics
公開日期: 1-Aug-2011
摘要: Polarization-entangled photon pairs have been widely used as a light source of quantum communication. The polarization-entangled photon pairs are generally obtained at the crossing points of the light cones that are generated from a type-II nonlinear crystal. However, it is hard to pick up the photon pairs coming out from the crossing points because of their invisible wavelength and low intensity. In our previous work, we succeeded in generating polarization-entangled photon pairs by overlapping two light paths for the photon-pair generation. The photon pairs could be entangled in all of the generated photon pairs without clipping the crossing points, even with some difficulty in its alignment to overlap the two light paths. In this paper, we have developed an optical system which generates polarization-entangled photon pairs using a beamlike photon pair, without the difficulty in alignment. The measured results show that the photon pairs generated in the system are entangled in their polarizations.
URI: http://dx.doi.org/10.1103/PhysRevA.84.022301
http://hdl.handle.net/11536/20982
ISSN: 2469-9926
DOI: 10.1103/PhysRevA.84.022301
期刊: PHYSICAL REVIEW A
Volume: 84
Issue: 2
起始頁: 0
結束頁: 0
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