Microscopic models of quantum jump super-operators

Details Microscopic models of quantum jump super-operators Microscopic models of quantum jump super-operators

2005-06-15

arxiv.org/abs/quant-ph/0506118v3

Physical Review A 72, 023816 (2005)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevA.72.023816

We discuss the quantum jump operation in an open system, and show that jump super-operators related to a system under measurement can be derived from the interaction of that system with a quantum measurement apparatus. We give two examples for the interaction of a monochromatic electromagnetic field in a cavity (the system) with 2-level atoms and with a harmonic oscillator (representing two different kinds of detectors). We show that derived quantum jump super-operators have `nonlinear' form which depends on assumptions made about the interaction between the system and the detector. A continuous transition to the standard Srinivas--Davies form of the quantum jump super-operatoris shown.

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