CAVITY FIELD SPECTRA OF AN ATOM INTERACTING WITH   TWO-MODE FIELD THROUGH RAMAN PROCESS

A scheme is proposed for the reconstruction of two-mode entangled states in cavity QED and ion traps. For a two-mode field we show that the Wigner function can be obtained by measuring the probability of a two-level atom being in ground states after resonant interaction with two classical fields and dispersive interaction with the two-mode cavity field displaced by resonant sources. For the two-dimensional motion of a trapped ion the Wigner function is obtained by measuring the probability of the ion in its ground electronic state after displacing the ion motion and then resonantly exciting the ion.

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Emission spectrum of two atoms interacting with two modes of the cavity field with different coupling constants through a multiphoton Raman process

Journal of Physics B Atomic Molecular and Optical Physics ◽

10.1088/0953-4075/31/23/017 ◽

1998 ◽

Vol 31 (23) ◽

pp. 5209-5214 ◽

Cited By ~ 1

Author(s):

Jian Feng ◽

Tong-qiang Song ◽

Yun-feng Gao

Keyword(s):

Emission Spectrum ◽

Coupling Constants ◽

Cavity Field ◽

Raman Process

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MOVING FOUR-LEVEL ATOM INTERACTING WITH A SINGLE-MODE FIELD WITH INTENSITY DEPENDENT COUPLING

International Journal of Modern Physics B ◽

10.1142/s0217979204026226 ◽

2004 ◽

Vol 18 (20n21) ◽

pp. 2901-2914

Author(s):

R. A. ZAIT

Keyword(s):

Photon Number ◽

Single Mode ◽

Cavity Field ◽

Field Coupling ◽

Mode Field ◽

Level Atom ◽

The Mean ◽

Reduced Density ◽

Field Wave ◽

Intensity Dependent Coupling

We study the interaction of a moving four-level atom with a single mode cavity field. Involving intensity dependent coupling, the atom-field wave function and the reduced density matrix of the field are obtained when the atom is initially prepared in a coherent superposition of the upper and ground states and the field is initially in a coherent state. The influence of the intensity dependent atom-field coupling and of the detuning on the collapse and revival phenomenon of the time evolution of statistical aspects, such as the mean photon number, the second-order correlation function of the field, the momentum increment and momentum diffusion, are investigated. It is found that, for the nonresonant case, the detuning between the field and the atom has a significant influence which leads to increasing the collapse time with decreasing amplitude. Numerical computations and discussion of the results are presented.

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Cavity field spectrum of a cascade three-level atom interacting with a single-mode field

Acta Physica Sinica ◽

10.7498/aps.53.2563 ◽

2004 ◽

Vol 53 (8) ◽

pp. 2563

Author(s):

Gao Yun-Feng ◽

Feng Jian ◽

Wang Ji-Suo

Keyword(s):

Single Mode ◽

Cavity Field ◽

Mode Field ◽

Level Atom ◽

Field Spectrum

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Fluorescence Spectrum of an Atom Interacting with a Quantized Cavity Field with Arbitrary Nonlinearities

International Journal of Nanoscience ◽

10.1142/s0219581x03001127 ◽

2003 ◽

Vol 02 (01n02) ◽

pp. 49-63 ◽

Cited By ~ 1

Author(s):

Mahmoud Abdel-Aty ◽

Tarek M. El-Shahat ◽

Abdel-Shafy F. Obada

Keyword(s):

Fluorescence Spectrum ◽

Coherent States ◽

Single Mode ◽

Analytic Form ◽

Cavity Field ◽

Field Coupling ◽

Field System ◽

Mode Field ◽

Dressed States ◽

Jc Model

We present a detailed theory of a general formalism of a nonlinear JC-model. In particular we explicitly take into account forms of nonlinearities of both the field and the intensity-dependent atom-field coupling and study the properties of the fluorescence spectrum in this system. The exact solution for time-dependence of the atom-field system is obtained, by means of which we analyze the analytic form of the fluorescence spectrum produced by an atom in an ideal cavity using the transitions among the dressed states of the system. We investigate the influences of the nonlinearities on the fluorescence spectrum, for initial squeezed, thermal and coherent states. It is shown that features of the fluorescence spectrum are significantly influenced by the kinds of nonlinearities of the single-mode field.

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