Browsing by Author "Yabushita, A"

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Generation of frequency tunable polarization entangled photon pairs
(2006-03-15)
Yabushita, A
;
Kobayashi, T
;
電子物理學系
;
Department of Electrophysics
Photon pairs with correlated frequencies from an optical parametric system were generated by a continuous wave pump focused on a type-II nonlinear crystal with polarization entanglement. The polarization entanglement of the frequency resolved photons was measured under several typical configurations. By optimizing a condition, the degree of polarization entanglement was improved substantially. We proposed the application of the system, which can be used as a light source of wavelength division multiplexing quantum key distribution, optimizing the configuration of the photon-pair generation. (c) 2006 American Institute of Physics.