scholarly journals Influence of the field with varying frequency modulation on atomic population inversion in non-ratating-wave approximation

2010 ◽  
Vol 59 (8) ◽  
pp. 5508
Author(s):  
Liao Xu ◽  
Cong Hong-Lu ◽  
Jiang Dao-Lai ◽  
Ren Xue-Zao
Keyword(s):  
Frequency Modulation ◽  
Population Inversion ◽  
Wave Approximation ◽  
Atomic Population Inversion

CONTROL OF COLLAPSE-REVIVAL PHENOMENON USING A TIME VARYING SQUEEZED FIELD

2011 ◽  
Vol 20 (02) ◽  
pp. 155-165 ◽  
Author(s):  
K. V. PRIYESH ◽  
RAMESH BABU THAYYULLATHIL
Keyword(s):  
Time Evolution ◽  
Frequency Modulation ◽  
Population Inversion ◽  
Light Field ◽  
Time Varying ◽  
Light Atom ◽  
Squeezed Light ◽  
Level Atom ◽  
Time Varying Frequency ◽  
Atom Interaction

We have investigated the interaction of two level atom with time varying quadrature squeezed light field. Jaynes-Cummings model is used for solving the atom radiation interaction. Time evolution of the system for different squeezing parameter and phase have been studied. There are no well-defined revivals in population inversion when the squeezed phase is π and the squeezing parameter is greater than 0.5. Using a time varying frequency for the light field, it is found that the randomness of the population inversion and the collapse revival phenomena can be controlled. Frequency modulation of the field can thus be used as a tool for manipulating the squeezed light atom interaction.

INFLUENCE OF THE COUNTER-ROTATING TERMS ON THE RABI OSCILLATIONS IN THE POLYATOMIC JAYNES-CUMMINGS MODEL WITH CAVITY LOSSES FOR INITIAL FOCK-STATE FIELDS

1996 ◽  
Vol 10 (26) ◽  
pp. 1311-1322
Author(s):  
J. SEKE
Keyword(s):  
Dipole Moment ◽  
Time Evolution ◽  
Population Inversion ◽  
Photon Number ◽  
Numerical Results ◽  
Rabi Oscillations ◽  
Virtual Photons ◽  
Fock State ◽  
The Mean ◽  
Atomic Population Inversion

The significance of the counter-rotating terms in the polyatomic Jaynes-Cummings model with cavity losses is demonstrated. Numerical results for the time evolution of the atomic population inversion and dipole moment for an initial Fock-state field with different photon numbers are presented for various cavity dampings. The appearance of new steady states for the population inversion and the mean-photon number under the influence of the counter-rotating terms is pointed out. Namely, as is shown, the presence of “virtual photons”, produced by the counter-rotating terms, leads to these effects.

Pancharatnam phase for the generalized Jaynes–Cummings model with a nonlinear Kerr cavity

2009 ◽  
Vol 87 (4) ◽  
pp. 389-398 ◽  
Author(s):  
M. Aouachria ◽  
L. Chetouani
Keyword(s):  
Energy Spectrum ◽  
Path Integral ◽  
Population Inversion ◽  
Stark Shift ◽  
Perturbation Series ◽  
Wave Functions ◽  
Level System ◽  
Pancharatnam Phase ◽  
Atomic Population Inversion

The formalism of path integral is used to treat the influence of Stark shift on the atomic population inversion (API) and Pancharatnam phase in the Jaynes–Cummings model with a nonlinear Kerr cavity. The propagators are given explicitly as perturbation series. In the case of a quantized wave interacting with a two-level system, these are summed up exactly, and the corresponding Pancharatnam phase as well as atomic population inversion, and energy spectrum with corresponding wave functions are deduced.

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