Abstract
Thus far we have developed the equations of the evolution of operators as transformed by linear systems. We pointed out that strictly linear transformations occur only in passive circuits described by the linear Maxwell equations. Active circuits behave linearly only approximately, up to a maximum intensity. The scattering matrix of the operators of a linear system and the commutators of the noise sources completely describe the system. Average values and mean square fluctuations can be computed.
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© 2000 Springer-Verlag Berlin Heidelberg
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Haus, H.A. (2000). Photon Probability Distributions and Bit-Error Rate of a Channel with Optical Preamplification. In: Electromagnetic Noise and Quantum Optical Measurements. Advanced Texts in Physics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04190-1_10
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DOI: https://doi.org/10.1007/978-3-662-04190-1_10
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-08462-1
Online ISBN: 978-3-662-04190-1
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