Propagation of squeezed radiation through amplifying or absorbing random media

Abstract

We analyse how nonclassical features of squeezed radiation (in particular the sub-Poissonian noise) are degraded when it is transmitted through an amplifying or absorbing medium with randomly located scattering centra. Both the cases of direct photodetection and of homodyne detection are considered. Explicit results are obtained for the dependence of the Fano factor (the ratio of the noise power and the mean current) on the degree of squeezing of the incident state, on the length and the mean free path of the medium, the temperature, and on the absorption or amplification rate.

8 pages, 4 figures

References in corpus (7)

• Random-Matrix Theory of Quantum Transport
• Thermal radiation and amplified spontaneous emission from a random medium
• Transmission through a many-channel random waveguide with absorption
• Quantum state transformation by dispersive and absorbing four-port devices
• Excess noise for coherent radiation propagating through amplifying random media
• Photon shot noise
• Photonic excess noise and wave localization

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