International Journal of Optics and Photonics
IJOP
Basic Sciences
http://ijop.ir
1
admin
1735-8590
2538-4007
10.52547/ijop
1735-8590
en
jalali
1400
9
1
gregorian
2021
12
1
15
2
online
1
fulltext
en
Interaction of a Three-Level Atom (Λ, V, Ξ) with a Two-Mode Field Beyond Rotating Wave Approximation: Intermixed Intensity-Dependent Coupling
تخصصي
Special
پژوهشي
Research
<strong>Recalling that the rotating wave approximation (RWA) is only valid in the weak coupling regimes, our purpose is to study the Hamiltonian dynamics of the interaction between various configurations of a three-level atom of Lambda, V, or Ladder-type distinctly with a two-mode radiation quantized field, while the RWA is not considered. Generally, this prevents one to achieve an analytical solution. Moreover, as we will show, using the perturbation theory analytical solution can be successfully obtained. According to our considerations, the contribution of counter rotating terms (CRTs) within the ordinary Hamiltonian is equivalent to arriving at some intermixed intensity-dependent atom-field coupling as functions of the two modes of the field, i.e., f(n_1, n_2). At last, via evaluating the time-dependent atom–field state vector, the effects of CRTs on a few nonclassical properties of the state of the system as atomic population inversion and photon statistics are numerically studied. It is observed that, the presence of CRTs in the Hamiltonian dynamics destroys the clear patterns of collapse-revival phenomena in the time behavior of the evaluated quantities.</strong>
Counter-rotating terms (CRTs), Intensity-dependent coupling, Nonclassical state, Perturbation theory, Rotating wave approximation (RWA).
151
166
http://ijop.ir/browse.php?a_code=A-10-70-1&slc_lang=en&sid=1
Neda
Asili Firouzabadi
neda.asili@stu.yazd.ac.ir
`10031947532846003903`

10031947532846003903
No
Optics and Laser Group, Faculty of Physics, Yazd University, Yazd, Iran
Mohammad Kazem
Tavassoly
mktavassoly@yazd.ac.ir
`10031947532846003904`

10031947532846003904
Yes
Optics and Laser Group, Faculty of Physics, Yazd University, Yazd, Iran