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Proceedings Paper

Time-bin entangled photon pairs from spontaneous parametric down-conversion pumped by a cw multi-mode diode laser
Author(s): Osung Kwon; Kwang-Kyoon Park; Young-Sik Ra; Yong-Su Kim; Yoon-Ho Kim
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Paper Abstract

The Franson interferometer consists of two spatially separated unbalanced Mach-Zehnder interferometers through which the signal and the idler photons from spontaneous parametric down-conversion (SPDC) are made to transmit. It is often used to prepare time-bin entanglement of two photons in the two SPDC pumping regimes: the narrowband regime and the double-pulse regime. In the narrowband regime, the SPDC process is pumped by a narrowband cw laser with the coherence length much longer than the path length difference of the Franson interferometer. In the double-pulse regime, the longitudinal separation between the pulse pair is made equal to the path length difference of the Franson interferometer. In this paper, we propose another regime by which the generation of time-bin entanglement is possible and demonstrate the scheme experimentally.

Paper Details

Date Published: 4 March 2015
PDF: 8 pages
Proc. SPIE 9377, Advances in Photonics of Quantum Computing, Memory, and Communication VIII, 93770G (4 March 2015); doi: 10.1117/12.2078982
Show Author Affiliations
Osung Kwon, Pohang Univ. of Science and Technology (Korea, Republic of)
Korea Institute of Science and Technology
Kwang-Kyoon Park, Pohang Univ. of Science and Technology (Korea, Republic of)
Young-Sik Ra, Pohang Univ. of Science and Technology (Korea, Republic of)
Yong-Su Kim, Korea Institute of Science and Technology (Korea, Republic of)
Yoon-Ho Kim, Pohang Univ. of Science and Technology (Korea, Republic of)
Korea Institute of Science and Technology (Korea, Republic of)


Published in SPIE Proceedings Vol. 9377:
Advances in Photonics of Quantum Computing, Memory, and Communication VIII
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Alan L. Migdall, Editor(s)

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