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A consistent quantum model for continuous photodetection processes

M. C. de Oliveira·S. S. Mizrahi·V. V. Dodonov
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Abstract

We are modifying some aspects of the continuous photodetection theory, proposed by Srinivas and Davies [Optica Acta 28, 981 (1981)], which describes the non-unitary evolution of a quantum field state subjected to a continuous photocount measurement. In order to remedy inconsistencies that appear in their approach, we redefine the `annihilation' and `creation' operators that enter in the photocount superoperators. We show that this new approach not only still satisfies all the requirements for a consistent photocount theory according to Srinivas and Davies precepts, but also avoids some weird result appearing when previous definitions are used.

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M. C. de Oliveira, S. S. Mizrahi, V. V. Dodonov. 2003-07-11. A consistent quantum model for continuous photodetection processes. https://doi.org/10.1088/1464-4266/5/3/358

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