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Volume 25 - ICOP & ICPET 2019
ICOP & ICPET _ INPC _ ICOFS 2019, 25 - ICOP & ICPET 2019: 857-860 |
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Samimi S, Golshan M M. Optical Phase Transition in Janes-Cummings Model with Counter Rotating Wave. ICOP & ICPET _ INPC _ ICOFS 2019; 25 :857-860
URL: http://opsi.ir/article-1-1673-en.html
URL: http://opsi.ir/article-1-1673-en.html
1- Physics Department, Science College, Shiraz University, Shiraz, Iran
Abstract: (1610 Views)
In this paper it is shown that there is an optical phase transition in the systems of two level atoms and photons, with large detuning and under counter-rotating wave approximation. Our calculations show that such system, even under this approximation have two independent optical phases, the well known normal and super-radiant ones. In the normal phase, the ground state of the total Hamiltonian, with a large detuning, is a state for which the mean photon number is zero. On the other hand, when the atom-photon coupling constant exceeds a critical value, the photon mean number is nonzero when the system is in the ground state, and the system makes a transition to the super-radiant phase. We also show this is a second order phase transition.
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