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year 27, Issue 2 (ICOP & ICPET 2021 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 27(2): 482-485 |
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Jahanbakhsh , Tavassoly M K. Entanglement dynamics and population inversion of two qubits interacting with a two-mode quantized field: beyond the rotating wave approximation. ICOP & ICPET _ INPC _ ICOFS 2021; 27 (2) :482-485
URL: http://opsi.ir/article-1-2408-en.html
URL: http://opsi.ir/article-1-2408-en.html
1- Optics and Laser Group, Faculty of Physics, Yazd University
Abstract: (959 Views)
In this paper, we solve the time-dependent Schrödinger equation for the desired system by considering the interaction between two qubits with a two-mode quantized field in a high-quality cavity and in the absence of rotating wave approximation. Then we calculate and examine two quantities concurrence (in order to investigate the entanglement dynamics) as well as population inversion (in order to evaluate the rate of energy exchange between atoms and the field) for the system. Our numerical results show that death and then birth of entanglement occur in some cases. Also, collapse-revival phenomena can be observed for both quantities investigated, that the number of collapse and revivals can be increased or decreased by choosing different values of the effective parameters in the desired model.
Keywords: Concurrence, Rotating wave approximation, Jaynes-Cummings model, Quantum entanglement, Population inversion
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