Physical Properties, Field Purity, and Quantum Phase for a Two-Level Atom in Photon-Added Coherent States for the Morse Potential

2017 ◽  
Vol 38 (5) ◽  
pp. 437-445 ◽  
Author(s):  
Maarib A. Alsahhaf ◽  
Shatha A. Aldaghfag ◽  
S. Abdel-Khalek
Keyword(s):  
Physical Properties ◽  
Coherent States ◽  
Morse Potential ◽  
Quantum Phase ◽  
Level Atom ◽  
Field Purity

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.

A scheme for conditional quantum phase gate via bimodal cavity and a Λ-type three-level atom

2006 ◽  
Vol 15 (11) ◽  
pp. 2518-2522 ◽  
Author(s):  
Cai Jian-Wu ◽  
Fang Mao-Fa ◽  
Liao Xiang-Ping ◽  
Zheng Xiao-Juan
Keyword(s):  
Quantum Phase ◽  
Quantum Phase Gate ◽  
Level Atom ◽  
Phase Gate

scholarly journals On the Quantum Phase Operator for Coherent States

2004 ◽  
Vol 70 (1) ◽  
pp. 26-32 ◽  
Author(s):  
Bo-Sture K Skagerstam ◽  
Bjørn Å Bergsjordet
Keyword(s):  
Coherent States ◽  
Quantum Phase ◽  
Phase Operator
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