Dynamics of an M-Level Atom Interacting with Cavity Fields: Properties of Photon Statistics

1989 ◽  
Author(s):  
Fu-Li Li ◽  
Xiao-Shen Li ◽  
D. L. Lin ◽  
Thomas F. George
Keyword(s):  
Photon Statistics ◽  
Level Atom

Sub-Poissonian photon statistics of light in interaction of two-level atoms in superposed states with a single mode superposed coherent radiation

2010 ◽  
Vol 88 (3) ◽  
pp. 181-188 ◽  
Author(s):  
Rakesh Kumar ◽  
Hari Prakash
Keyword(s):  
Coherent State ◽  
Single Mode ◽  
Fano Factor ◽  
Coherent Radiation ◽  
Photon Statistics ◽  
Coupling Constant ◽  
Large Coupling ◽  
Definite Relationship ◽  
Level Atom ◽  
Coupling Time

We study sub-Poissonian photon statistics of light in interaction of a single mode radiation, initially either in a coherent state or in a superposed coherent state with an assembly of two-level atoms using the Hamiltonian, H = ω(a+a + Sz) + g(aS+ + a+ S–) in natural units, where a+ and a are creation and annihilation operators, Sz, S ± are the collective Dicke operators, g is the coupling constant, and ω is the energy of the photons and also the separation between the two atomic levels. We study the cases of (i) a single two-level and (ii) of two two-level atoms interacting with a single mode coherent or superposed coherent radiation. We find that for large coupling time gt, Fano factor shows collapses and revival phenomena, and that the variation is large for small mean number of photons. We also find that in the case of two two-level atoms, photon statistics shows larger sub-Poissonian than the case of a single two-level atom, and that there is no definite relationship between squeezing and sub-Poissonian photon statistics of light.

Dynamics of anM-level atom interacting with cavity fields. II. Properties of photon statistics

1989 ◽  
Vol 40 (9) ◽  
pp. 5129-5134 ◽  
Author(s):  
Fu-li Li ◽  
Xiao-shen Li ◽  
D. L. Lin ◽  
Thomas F. George
Keyword(s):  
Photon Statistics ◽  
Level Atom

scholarly journals Influence of classical field on entanglement and photon statistics of n-level atom interacting with a two two-level atom

2020 ◽  
Vol 24 (Suppl. 1) ◽  
pp. 177-186
Author(s):  
Hammad Alotaibi ◽  
Eied Khalil ◽  
Sayed Abdel-Khalek ◽  
Abdullah Al-Barakaty
Keyword(s):  
External Field ◽  
Equation Of Motion ◽  
Classical Field ◽  
The Other ◽  
Photon Statistics ◽  
Heisenberg Equation ◽  
Initial State ◽  
N Level ◽  
Level Atom ◽  
Interacting Atoms

In this study, we consider three interacting atoms, one of them represented by N-level atom based on SU(2) Lie algebra and the other represented by a two two-level atom in presence of the external field. The effect of the external field on the dynamics of the proposed system is discussed in detail for certain values for the external field. The dynamical expression of the observable operators is obtained by using the Heisenberg equation of motion. The general solution via solving Schrodinger equation is obtained. The fidelity and concurrence formula as a measure of entanglement between two two-level atom are calculated and discussed in detail. We explore the sudden death and sudden birth phenomena with and without the presence of external field. Finally, we compare the results of the fidelity, concurrence and second-order correlation function for some values of the initial state and the external field parameters.

Sub-Poissonian single-emitter laser: Coherent pump vs incoherent

2020 ◽  
Vol 35 (03) ◽  
pp. 2040026
Author(s):  
Nikolay V. Larionov ◽  
Ilya V. Safonov
Keyword(s):  
Numerical Simulation ◽  
Master Equation ◽  
Cavity Mode ◽  
Photon Statistics ◽  
Level Atom ◽  
Coherent Field ◽  
Single Emitter ◽  
Incoherent Pump

We theoretically investigate the properties of a single-emitter laser with coherent pump: two-level atom interacting with a single damping cavity mode which is resonantly excited by a coherent field. With the help of numerical simulation of the master equation we show that such pumping mechanism is more preferably than incoherent pump for achieving of sub-Poissonian photon statistics.

INFLUENCE OF DETUNING ON THE INTERACTION OF A FOUR-LEVEL ATOM WITH TWO-MODE CAVITY FIELD

2008 ◽  
Vol 22 (28) ◽  
pp. 2801-2809 ◽  
Author(s):  
N. H. ABDEL-WAHAB
Keyword(s):  
Excited State ◽  
Atomic System ◽  
Photon Statistics ◽  
Cavity Field ◽  
Atomic Systems ◽  
Level Atom ◽  
Collapse Time

The atomic system on which we focus is a single four-level atom interacting with two-mode cavity fields. We obtain the wavefunction when the atom is initially in an excited state. The result presented in this context is employed to discuss the collapses–revivals phenomenon, the photon statistics and frequency sum squeezing phenomenon. The influence of the detuning on these phenomena are investigated for two four-level atomic systems. We found that the presence of the detuning leads to an increase of the collapse time while the amount of squeezing decreases. Also, the photon statistics is affected by the existence of the detuning parameters where the anti-bunching effect appears.

scholarly journals Influence of classical field on entanglement and photon statistics of n-level atom interacting with a two two-level atom

2020 ◽  
Vol 24 (Suppl. 1) ◽  
pp. 177-186
Author(s):  
Hammad Alotaibi ◽  
Eied Khalil ◽  
Sayed Abdel-Khalek ◽  
Abdullah Al-Barakaty
Keyword(s):  
External Field ◽  
Equation Of Motion ◽  
Classical Field ◽  
The Other ◽  
Photon Statistics ◽  
Heisenberg Equation ◽  
Initial State ◽  
N Level ◽  
Level Atom ◽  
Interacting Atoms

In this study, we consider three interacting atoms, one of them represented by N-level atom based on SU(2) Lie algebra and the other represented by a two two-level atom in presence of the external field. The effect of the external field on the dynamics of the proposed system is discussed in detail for certain values for the external field. The dynamical expression of the observable operators is obtained by using the Heisenberg equation of motion. The general solution via solving Schrodinger equation is obtained. The fidelity and concurrence formula as a measure of entanglement between two two-level atom are calculated and discussed in detail. We explore the sudden death and sudden birth phenomena with and without the presence of external field. Finally, we compare the results of the fidelity, concurrence and second-order correlation function for some values of the initial state and the external field parameters.

Sign in / Sign up

Export Citation Format

Share Document