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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry van Driel
  • Vol. 27, Iss. 6 — Jun. 1, 2010
  • pp: A119–A129

Quantum model for electro-optical phase modulation

José Capmany and Carlos R. Fernández-Pousa  »View Author Affiliations

JOSA B, Vol. 27, Issue 6, pp. A119-A129 (2010)

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We present a detailed analysis of the quantum description of electro-optical phase modulation. The results define a black-box type model for this device, which may be especially useful in the engineering steps leading to the design of complex quantum information systems incorporating one or more of these devices. By constructing an explicit representation of the phase modulation scattering operator, it is shown that an approach based entirely on its classical description leads to unphysical modes associated to non-positive frequencies. After modifying this operator, phase modulation is described, for the first time to the best of our knowledge, in terms of a unitary scattering operator S ̂ defined over positive-frequency modes. The modifications introduced by S ̂ in the process of sideband generation by phase modulation are shown to be insignificant when the radiation belongs to optical bands, thus being consistent with the classical description. Finally, the model is employed to characterize the important case of multitone radio- frequency modulation of an optical signal.

© 2010 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(230.2090) Optical devices : Electro-optical devices
(270.5565) Quantum optics : Quantum communications

ToC Category:
Quantum Nonlinear Optics

Original Manuscript: November 2, 2009
Revised Manuscript: March 3, 2010
Manuscript Accepted: March 12, 2010
Published: April 30, 2010

José Capmany and Carlos R. Fernández-Pousa, "Quantum model for electro-optical phase modulation," J. Opt. Soc. Am. B 27, A119-A129 (2010)

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