Quantum Noise Reduction and Generalized Two-Mode Squeezing in a Cavity Raman Laser

Details Quantum Noise Reduction and Generalized Two-Mode Squeezing in a Cavity Raman Laser Quantum Noise Reduction and Generalized Two-Mode Squeezing in a Cavity Raman Laser

1998-08-17

arxiv.org/abs/physics/9808022v1

Physics

Optics

31 pages, 10 figures, to appear in Phys. Rev. A

Scientific paper

10.1103/PhysRevA.58.3268

We study a generalized notion of two-mode squeezing for the Stokes and anti-Stokes fields in a model of a cavity Raman laser, which leads to a significant reduction in decoherence or quantum noise. The model comprises a loss-less cavity with classical pump, unsaturated medium and arbitrary homogeneous broadening and dispersion. Allowing for arbitrary linear combinations of the two modes in the definition of quadrature variables, we find that there always exists a combination of the two output modes which exhibits quadrature squeezing with noise reduction below the vacuum level. The number of noise photons for this combination mode is proportional to the square root of the number of Stokes noise photons.

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