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Kraus Operator-Sum Solution to the Master Equation Describing the Single-Mode Cavity Driven by an Oscillating External Field in the Heat Reservoir
- Source :
- International Journal of Theoretical Physics. 55:3630-3636
- Publication Year :
- 2016
- Publisher :
- Springer Science and Business Media LLC, 2016.
-
Abstract
- Exploiting the thermo entangled state approach, we successfully solve the master equation for describing the single-mode cavity driven by an oscillating external field in the heat reservoir and then get the analytical time-evolution rule for the density operator in the infinitive Kraus operator-sum representation. It is worth noting that the Kraus operator Ml, m is proved to be a trace-preserving quantum operation. As an application, the time-evolution for an initial coherent state ρ|β〉 = |β〉〈β| in such an environment is investigated, which shows that the initial coherent state decays to a new mixed state as a result of thermal noise, however the coherence can still be reserved for amplitude damping.
- Subjects :
- Physics and Astronomy (miscellaneous)
Thermal reservoir
General Mathematics
Operator (physics)
State (functional analysis)
01 natural sciences
010305 fluids & plasmas
Amplitude
Classical mechanics
0103 physical sciences
Master equation
Quantum operation
Coherent states
010306 general physics
Coherence (physics)
Mathematics
Subjects
Details
- ISSN :
- 15729575 and 00207748
- Volume :
- 55
- Database :
- OpenAIRE
- Journal :
- International Journal of Theoretical Physics
- Accession number :
- edsair.doi...........208a905b6e04604dafba1265b1a9c86e