Physics – Quantum Physics
Scientific paper
2011-03-18
Int. J. Mod. Phys. C 22, 1015-1062 (2011)
Physics
Quantum Physics
43 pages, 6 eps figures, Latex2e; v2: a new section about thermal effects of the counter-rotating terms is added
Scientific paper
10.1142/S0129183111016750
In this paper, we investigate thermal effects of the Jaynes-Cummings model (JCM) at finite temperature with a perturbative approach. We assume a single two-level atom and a single cavity mode to be initially in the thermal equilibrium state and the thermal coherent state, respectively, at a certain finite low temperature. Describing this system with Thermo Field Dynamics formalism, we obtain a low-temperature expansion of the atomic population inversion in a systematic manner. Letting the system evolve in time with the JCM Hamiltonian, we examine thermal effects of the collapse and the revival of the Rabi oscillations by means of the third-order perturbation theory under the low-temperature limit, that is to say, using the low-temperature expansion up to the third order terms. From an intuitive discussion, we can expect that the period of the revival of the Rabi oscillations becomes longer as the temperature rises. Numerical results obtained with the perturbation theory reproduce well this temperature dependence of the period.
Azuma Hiroo
Ban Masashi
No associations
LandOfFree
Thermal effects in Jaynes-Cummings model derived with low-temperature expansion does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal effects in Jaynes-Cummings model derived with low-temperature expansion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal effects in Jaynes-Cummings model derived with low-temperature expansion will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-184899