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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 23 — Nov. 7, 2011
  • pp: 22698–22708

Reducing multi-photon rates in pulsed down-conversion by temporal multiplexing

M. A. Broome, M. P. Almeida, A. Fedrizzi, and A. G. White  »View Author Affiliations

Optics Express, Vol. 19, Issue 23, pp. 22698-22708 (2011)

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We present a simple technique to reduce the emission rate of higher-order photon events from pulsed spontaneous parametric down-conversion. The technique uses extra-cavity control over a mode locked ultrafast laser to simultaneously increase repetition rate and reduce the energy of each pulse from the pump beam. We apply our scheme to a photonic quantum gate, showing improvements in the non-classical interference visibility for 2-photon and 4-photon experiments, and in the quantum-gate fidelity and entangled state production in the 2-photon case.

© 2011 OSA

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Nonlinear Optics

Original Manuscript: August 23, 2011
Revised Manuscript: October 6, 2011
Manuscript Accepted: October 6, 2011
Published: October 26, 2011

M. A. Broome, M. P. Almeida, A. Fedrizzi, and A. G. White, "Reducing multi-photon rates in pulsed down-conversion by temporal multiplexing," Opt. Express 19, 22698-22708 (2011)

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