scholarly journals Evolution of the entropy of light field interacting with the V-type three-level atom via intensity-dependent coupling

2004 ◽  
Vol 53 (8) ◽  
pp. 2539
Author(s):  
Huang Chun-Jia ◽  
He Hui-Yong ◽  
Kong Fan-Zhi ◽  
Fang Jia-Yuan
Keyword(s):  
Light Field ◽  
Level Atom ◽  
Intensity Dependent Coupling

Periodic Quantum Echo of Moving and Entangled Two-atom via Light Field Intensity-dependent Coupling

2012 ◽  
Vol 41 (11) ◽  
pp. 1347-1353 ◽  
Author(s):  
刘小娟 LIU Xiao-juan ◽  
周并举 ZHOU bing-ju ◽  
姜春蕾 JIANG Chun-lei ◽  
彭朝晖 PENG Zhao-hui ◽  
刘明伟 LIU Ming-wei
Keyword(s):  
Field Intensity ◽  
Light Field ◽  
Intensity Dependent Coupling

FIELD PURIFICATION OF A GENERAL THREE-LEVEL SYSTEM INTERACTING WITH RADIATION

2003 ◽  
Vol 17 (07) ◽  
pp. 253-262 ◽  
Author(s):  
MAHMOUD ABDEL-ATY
Keyword(s):  
Exact Solution ◽  
Electromagnetic Field ◽  
Density Operator ◽  
Photon Number ◽  
Entangled State ◽  
Level System ◽  
Level Atom ◽  
Coherent Field ◽  
Field Purity ◽  
Intensity Dependent Coupling

In this essay we introduce a new Hamiltonian which represents the interaction between a three-level atom and a single electromagnetic field including arbitrary forms of nonlinearities of both the field and the intensity-dependent coupling. We derive an exact solution for the density operator of the system by means of which we study the field purity for the entangled state of the system. Also, the influences of the nonlinearities on the field purity and mean photon number are examined. Under the condition of an initial coherent field, the field purity shows the collapse-revival phenomenon. It is found that features of these phenomenon are sensitive to the changes of different kinds of the nonlinearities.

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.

The exact solution of a two-level atom moving in a quantized travelling light field and a gravitational field

2001 ◽  
Vol 10 (10) ◽  
pp. 935-940
Author(s):  
Zou Xu-bo ◽  
Xu Jing-bo ◽  
Gao Xiao-chun ◽  
Fu Jian
Keyword(s):  
Exact Solution ◽  
Gravitational Field ◽  
Light Field ◽  
Level Atom
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