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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 19 — Oct. 1, 2008
  • pp: 2191–2193

Observation of time correlation function of multimode two-photon pairs on a rubidium D 2 line

Fu-Yuan Wang, Bao-Sen Shi, and Guang-Can Guo  »View Author Affiliations

Optics Letters, Vol. 33, Issue 19, pp. 2191-2193 (2008)

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We report on the generation of a type-I multimode two-photon state on a rubidium D 2 line ( 780 nm ) using periodically poled K Ti O P O 4 crystals. With a degenerate optical parametric oscillator far below threshold, we observe an oscillatory correlation function; the cross correlation between two photons shows a cavity bandwidth of about 7.8 MHz . We also use a Fabry–Perot etalon to filter its most longitudinal modes and observe its time correlation function. The experimental data are well fitted to theoretical curves. This system could be utilized for demonstrating storage and retrieval of narrow-band photons in Rb atomic ensembles, which is important for long-distance quantum communication.

© 2008 Optical Society of America

OCIS Codes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers

ToC Category:
Quantum Optics

Original Manuscript: June 27, 2008
Revised Manuscript: August 11, 2008
Manuscript Accepted: August 17, 2008
Published: September 25, 2008

Fu-Yuan Wang, Bao-Sen Shi, and Guang-Can Guo, "Observation of time correlation function of multimode two-photon pairs on a rubidium D2 line," Opt. Lett. 33, 2191-2193 (2008)

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