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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25099–25106

Photon-number squeezing with a noisy femtosecond fiber laser amplifier source using a collinear balanced detection technique

Shota Sawai, Hikaru Kawauchi, Kenichi Hirosawa, and Fumihiko Kannari  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 25099-25106 (2013)

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We experimentally demonstrate photon-number squeezing at 1.55 μm using a noisy erbium-doped fiber amplifier (EDFA). We employ a collinear balanced detection (CBD) technique, where the intensity noise at a specific radio frequency is canceled between two pulse trains. In spite of substantially large excess noise (>10dB) in an EDFA due to amplified spontaneous emission, we successfully cancel the intensity noise and achieve a shot noise limit at a specific radio frequency with the CBD technique. We exploit two sets of fiber polarization interferometers to generate squeezed light and observe a maximal photon-number squeezing of −2.6dB.

© 2013 OSA

OCIS Codes
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(270.6570) Quantum optics : Squeezed states

ToC Category:
Quantum Optics

Original Manuscript: July 8, 2013
Revised Manuscript: September 7, 2013
Manuscript Accepted: September 9, 2013
Published: October 14, 2013

Shota Sawai, Hikaru Kawauchi, Kenichi Hirosawa, and Fumihiko Kannari, "Photon-number squeezing with a noisy femtosecond fiber laser amplifier source using a collinear balanced detection technique," Opt. Express 21, 25099-25106 (2013)

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