Abstract

The relationship between thermal light and coherent pulses is of fundamental and practical interest. We now know that thermal light cannot be represented as a statistical mixture of single pulses. In this paper, we ask whether or not thermal light can be represented as a statistical mixture of sets of pulses. We consider thermal light in a one-dimensional waveguide, and find a convex decomposition into products of orthonormal coherent states of localized, nonmonochromatic modes.

© 2017 Optical Society of America

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