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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 17 — Aug. 18, 2008
  • pp: 12460–12468

Stable source of high quality telecom-band polarization-entangled photon-pairs based on a single, pulse-pumped, short PPLN waveguide

Han Chuen Lim, Akio Yoshizawa, Hidemi Tsuchida, and Kazuro Kikuchi  »View Author Affiliations


Optics Express, Vol. 16, Issue 17, pp. 12460-12468 (2008)
http://dx.doi.org/10.1364/OE.16.012460


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Abstract

We demonstrate a stable source of high quality telecom-band polarization-entangled photon-pairs based on a single, pulse-pumped, short periodically-poled lithium niobate (PPLN) waveguide. Full quantum state tomographic measurement performed on the photon-pairs has revealed a very high state purity of 0.94, and an entanglement fidelity exceeding 0.96 at the low-rate-regime. At higher rates, entanglement quality degrades due to emission of multiple-pairs. Using a new model, we have confirmed that the observed degradation is largely due to double- and triple-pair emissions.

© 2008 Optical Society of America

OCIS Codes
(270.4180) Quantum optics : Multiphoton processes
(270.5565) Quantum optics : Quantum communications

ToC Category:
Quantum Optics

History
Original Manuscript: May 7, 2008
Revised Manuscript: July 15, 2008
Manuscript Accepted: July 23, 2008
Published: August 4, 2008

Citation
Han Chuen Lim, Akio Yoshizawa, Hidemi Tsuchida, and Kazuro Kikuchi, "Stable source of high quality telecom-band polarization-entangled photon-pairs based on a single, pulse-pumped, short PPLN waveguide," Opt. Express 16, 12460-12468 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-17-12460


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