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NANOSYSTEMS: PHYSICS, CHEMISTRY, MATHEMATICS, 2012, 3 (1), P. 93–100

MICROSCOPIC DISCRETE MODEL OF NONIDEAL PHOTODETECTOR

G.P. Miroshnichenko – Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Saint Petersburg, Russia, Professor, Doctor of Science, gpmirosh@gmail.com
A.I. Trifanov – Saint Petersburg National Research University of Information Technologies, Mechanics and Optics, Saint Petersburg, Russia, postgraduate student, alextrifanov@gmail.com.

The descreet photodetection process is under investigation. It is assumed to be nonideal due to the possibility of appearing “dark” and “bright” clicks of ionization chamber, which measures the atom state. The nonorthogonal POVM measures and Kraus extension on the field states space are proposed.

Keywords: photodetection, ionizing chamber, QED intracavity interaction, state reduction, Kraus extension.

UDC 539.182

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