ON THE CHARACTERISTICS OF FLUORESCENCE SPECTRUM OF A TWO-LEVEL ATOM INTERACTING WITH AN EVEN COHERENT STATE

The fluorescence spectrum of a two-level atom interacting with a quantized cavity field in an even coherent state, an eigenstate of two-photon annihilation operator, is investigated and compared with the spectral features obtained in an ordinary coherent state. Differences in the quality of these spectra are attributed to the interference effect present in the even coherent state.

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A FOUR-LEVEL ATOM INTERACTING WITH A SINGLE-MODE CAVITY FIELD: DOUBLE Ξ-CONFIGURATION

Modern Physics Letters B ◽

10.1142/s0217984908016868 ◽

2008 ◽

Vol 22 (26) ◽

pp. 2587-2599 ◽

Cited By ~ 11

Author(s):

N. H. ABDEL-WAHAB

Keyword(s):

Coherent State ◽

Time Evolution ◽

Single Mode ◽

Cavity Field ◽

Field System ◽

Input Field ◽

Level Atom ◽

Constants Of Motion ◽

Q Function ◽

Single Mode Cavity

In this article, the problem of a double Ξ-type four-level atom interacting with a single-mode cavity field is considered. The considered model describes several distinct configurations of a four-level atom. Also, this model includes the detuning parameters of the atom-field system. We obtain the constants of motion and the wavefunction is derived when the atom is initially prepared in the upper state. We used this model for computing a number of the field aspects for the considered system. As an illustration, the model is used for studying the time evolution of the Mandel Q-parameter, amplitude-squared squeezing phenomenon and Q-function when the input field is considered in a coherent state. The results show that these phenomena are affected by the presence of detuning parameters.

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TWO-LEVEL ATOM UNDERGOING TWO PHOTON TRANSITION IN A QUANTIZED FIELD: THE FLUORESCENT SPECTRUM

Modern Physics Letters B ◽

10.1142/s0217984992000806 ◽

1992 ◽

Vol 06 (12) ◽

pp. 729-736

Author(s):

AMITABH JOSHI ◽

S. V. LAWANDE

Keyword(s):

Fluorescence Spectrum ◽

Two Photon ◽

Photon Transition ◽

Dressed States ◽

Level Atom ◽

Coherent Field ◽

Fluorescent Spectrum ◽

Qualitative Nature ◽

Quantized Field ◽

The Mean

The fluorescence spectrum produced by a two-photon Jaynes-Cummings model (JCM) has been analyzed using the infinity of transitions among the dressed states of its Hamiltonian. A large number of resonances in the spectra are observed which are sensitive to the mean photon numbers of the quantized coherent field. Also, the qualitative nature of these spectra are in contrast to that of the corresponding spectra of standard JCM.

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INTENSITY DEPENDENT COUPLING HAMILTONIAN VIA MULTI-PHOTON INTERACTION IN A KERR MEDIUM

International Journal of Modern Physics B ◽

10.1142/s0217979203023392 ◽

2003 ◽

Vol 17 (30) ◽

pp. 5795-5810 ◽

Cited By ~ 5

Author(s):

R. A. ZAIT

Keyword(s):

Single Mode ◽

Kerr Medium ◽

Cavity Field ◽

Field Mode ◽

Atomic Inversion ◽

Two Photon ◽

Level Atom ◽

The One ◽

Q Function ◽

Quasiprobability Distribution

We study the dynamics and quantum characteristics of a single two-level atom interacting with a single mode cavity field undergoing a multi-photon processes in the presence of a nonlinear Kerr-like medium. The wavefunctions of the multi-photon system are obtained when the atom starts in the excited and in the ground state. The atomic inversion, the squeezing of the radiation field and the quasiprobability distribution Q-function of the field are discussed. Numerical results for these characteristics are presented when the atom starts in the excited state and the field mode in a coherent state. The influence of the presence and absence of the number operator and the Kerr medium for the one- and two-photon processes on the evolution of these characteristics are analyzed.

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TWO-PHOTON QUANTUM-STATISTICAL PROPERTIES OF THE SINGLE-MODE CAVITY FIELD INTERACTING WITH A PAIR OF COLD ATOMS

International Journal of Quantum Information ◽

10.1142/s0219749909004748 ◽

2009 ◽

Vol 07 (supp01) ◽

pp. 179-186 ◽

Cited By ~ 7

Author(s):

V. I. KOROLI

Keyword(s):

Cold Atoms ◽

Exact Analytical Solution ◽

Single Mode ◽

Initial Moment ◽

Cavity Field ◽

Two Photon ◽

Squeezed Vacuum ◽

Level Atom ◽

Quantum Statistical ◽

Single Mode Cavity

The interaction between the pair of cold two-level atoms and the single-mode cavity field is investigated. The two-level atoms in the pair are supposed to be indistinguishable. This problem generalizes the two-photon Jaynes-Cummings model of a single two-level atom interacting with the squeezed vacuum. The model of the pair of indistinguishable two-level atoms is equivalent to the problem of the equidistant three-level radiator with equal dipole moment matrix transition elements between the adjacent energy levels. Supposing that at the initial moment the field is in the squeezed vacuum state we obtain the exact analytical solution for the atom-field state-vector. By using this solution the quantum-statistical and squeezing properties of the radiation field are investigated. The obtained results are compared with those for the single two-level atom system. We observe that in the model of the pair of cold two-level atoms the exact periodicity of the squeezing revivals is violated by the analogy with the single two-level atom one.

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Squeezed vacuum as an eigenstate of two-photon annihilation operator

Pramana ◽

10.1007/bf02847756 ◽

1994 ◽

Vol 42 (4) ◽

pp. 311-314 ◽

Cited By ~ 3

Author(s):

C L Mehta ◽

Anil K Roy ◽

G M Saxena

Keyword(s):

Annihilation Operator ◽

Two Photon ◽

Squeezed Vacuum ◽

Photon Annihilation

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NON-DEGENERATE TWO-PHOTON FLUORESCENCE SPECTRUM FOR TWO-LEVEL ATOM IN SQUEEZED VACUUM

Acta Physica Sinica ◽

10.7498/aps.47.219 ◽

1998 ◽

Vol 47 (2) ◽

pp. 219

Author(s):

HE LIN-SHENG ◽

FENG XUN-LI ◽

WU SHI-XIONG ◽

ZHANG ZHI-MING ◽

XIA YU-XING

Keyword(s):

Fluorescence Spectrum ◽

Two Photon ◽

Squeezed Vacuum ◽

Level Atom ◽

Two Photon Fluorescence ◽

Photon Fluorescence

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The fluorescence spectrum of a three-level atom in two-photon resonance with the laser field

Optics Communications ◽

10.1016/0030-4018(77)90208-5 ◽

1977 ◽

Vol 20 (3) ◽

pp. 378-380 ◽

Cited By ~ 6

Author(s):

B. Sobolewska

Keyword(s):

Fluorescence Spectrum ◽

Laser Field ◽

Two Photon ◽

Level Atom ◽

Photon Resonance

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Noncommutative photon-added squeezed vacuum states

Modern Physics Letters A ◽

10.1142/s0217732320501679 ◽

2020 ◽

Vol 35 (20) ◽

pp. 2050167 ◽

Cited By ~ 1

Author(s):

H. Fakhri ◽

M. Sayyah-Fard

Keyword(s):

Annihilation Operator ◽

Single Mode ◽

Noise Band ◽

Two Photon ◽

Squeezed Vacuum ◽

Quadrature Squeezing ◽

Vacuum States ◽

Poissonian Statistics ◽

Photon Annihilation

Noncommutative optical squeezed vacuum states are constructed as eigenstates of an appropriate two-photon annihilation operator corresponding to the Biedenharn–Macfarlane [Formula: see text]-oscillator. We consider in details the role of noncommutativity parameter [Formula: see text] on the nonclassical behaviors including quadrature squeezing and sub-Poissonian statistics. Also, we construct the noncommutative photon-added squeezed vacuum states and consider their Hillery-type higher-order squeezing and single-mode noise band.

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