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Optica Publishing Group
  • International Conference on Quantum Electronics
  • OSA Technical Digest (Optica Publishing Group, 1988),
  • paper WB4

FUNDAMENTAL LIMITS ON SQUEEZED LIGHT GENERATION IN SEMICONDUCTORS

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Abstract

Squeezed light has recently been generated by both third order χ(3)1,2 and second-order χ(2)3,4 optical nonlinearities. Squeezed light is characterized by quantum noise in one phase quadrature which is less than that obtained for coherent state light (e.g., ideal laser light). This fundamental noise reduction is accomplished by parametric amplification and deamplification of the quantum light noise. It is critical that no linear loss mechanism accompanies the parametric gain of the nonlinear medium, since this leads to random deletion of single photons, destroying the photon pair coherence of the' parametric decay process responsible for squeezing. A large nonlinearity is required for the parametric amplifier (paramp) so that a nonlinear phase shift of order unity cart be achieved with a short interaction length and low pump intensity.

© 1988 Optical Society of America

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