scholarly journals Atomic population inversion in a two-level atom for shaped and chirped laser pulses: Exact solutions of Bloch equations with dephasing

2021 ◽  
pp. 104419
Author(s):  
S. Grira ◽  
N. Boutabba ◽  
H. Eleuch
Keyword(s):  
Exact Solutions ◽  
Population Inversion ◽  
Laser Pulses ◽  
Bloch Equations ◽  
Level Atom ◽  
Atomic Population Inversion

DYNAMICAL STARK EFFECT IN AN AMPLITUDE MODULATED FIELD

1988 ◽  
Vol 02 (01) ◽  
pp. 457-468 ◽  
Author(s):  
A. JOSHI ◽  
R.R. PURI ◽  
S.V. LAWANDE
Keyword(s):  
Population Inversion ◽  
Stark Effect ◽  
Analytic Solution ◽  
Bloch Equations ◽  
Level Atom ◽  
Secular Approximation ◽  
Atomic Population Inversion

The analytic solution of the Bloch equations in the secular approximation for a two level atom driven off-resonance by an intense amplitude modulated field is presented. The dependence of the atomic population inversion on the longitudinal and transverse lifetimes is investigated.

JAYNES-CUMMINGS MODEL WITH DISPLACED NUMBER STATES

1991 ◽  
Vol 05 (05) ◽  
pp. 797-814 ◽  
Author(s):  
V. BUŽEK ◽  
I. JEX ◽  
M. BRISUDOVÁ
Keyword(s):  
Time Evolution ◽  
Population Inversion ◽  
Emission Spectra ◽  
Cavity Field ◽  
Level Atom ◽  
Number State ◽  
Atomic Population Inversion

We investigate the dynamics of the Jaynes-Cummings model with the cavity field initially prepared in the displaced number state. The time evolution of the atomic population inversion, squeezing of the cavity field and the emission spectra from the two-level atom are studied.

Sub-10-fs Population Inversion in Air Driven by Few-cycle Laser Pulses

2016 ◽  
Author(s):  
Huailiang Xu ◽  
Erik Lötstedt ◽  
Atsushi Iwasaki ◽  
Kaoru Yamanouchi
Keyword(s):  
Population Inversion ◽  
Laser Pulses

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.

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