scholarly journals The interactions of a two-level atom with a coherent field of time-varying frequency: the two-photon transition

2008 ◽  
Vol 57 (3) ◽  
pp. 1693
Author(s):  
Li Zheng-Hong ◽  
Yu Ming-Zhang ◽  
Yang Ya-Ping
Keyword(s):  
Time Varying ◽  
Two Photon ◽  
Photon Transition ◽  
Level Atom ◽  
Coherent Field ◽  
Time Varying Frequency

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

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.

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.

ENTANGLEMENT CONTROLLING OF A THREE-LEVEL CASCADE ATOM INTERACTING WITH A TIME-DEPENDENT COHERENT FIELD

2009 ◽  
Vol 07 (04) ◽  
pp. 771-794 ◽  
Author(s):  
SHUANGYUAN XIE ◽  
FEI JIA ◽  
YAPING YANG
Keyword(s):  
Frequency Modulation ◽  
Great Influence ◽  
Atomic Level ◽  
Time Dependent ◽  
Frequency Variation ◽  
Time Varying ◽  
Field Frequency ◽  
Coherent Field ◽  
Time Varying Frequency ◽  
Degree Of Entanglement

The interaction between a three-level cascade atom and an initial coherent field with a time-varying frequency has been investigated, including the dynamic behavior of the atomic level occupation probabilities and the entanglement between the atom and the field. The frequency of the field is modulated in the forms of sine and rectangle. It is found that the field-frequency variation has a great influence on the properties of the generalized Jaynes-Cummings model. Appropriate frequency modulation can enhance and stabilize the degree of entanglement between the atom and the field.

Resonance fluorescence spectra from a three level atom interacting with a strong bichromatic field: induced two photon transitions

1983 ◽  
Vol 61 (1) ◽  
pp. 15-29 ◽  
Author(s):  
Douglas A. Hutchinson ◽  
Christine Downie ◽  
Constantine Mavroyannis
Keyword(s):  
Ground State ◽  
Rabi Frequency ◽  
Resonance Fluorescence ◽  
Excitation Spectra ◽  
Laser Fields ◽  
Two Photon ◽  
Photon Transition ◽  
Level Atom ◽  
Photon Excitation ◽  
The One

This investigation describes the interaction of a three level atom with two laser fields. One of the transitions from the ground state is in resonance with twice the frequency of the first laser and the other transition from the ground state is in resonance with the second laser. The Green's function formalism is used to derive expressions from which the induced two photon and one photon excitation spectra are computed. Also, approximate expressions are derived for the excitation spectra in the appropriate frequency regions. These results agree well with the numerical computations based upon the precise expressions. The interference between the two transitions produce some splittings; these splittings depend upon the Rabi frequency of the one photon transition. The intensities of the weak peaks depend upon the ratio of the Rabi frequency of the two photon transition to the frequency of the first laser. Some features of the excitation spectra are interpreted in terms of previous knowledge about the behavior of two level atoms in strong laser fields.

scholarly journals Interaction of a three-level atom and a field with a time-varying frequency in the context of triangular well potentials: An exact treatment

2020 ◽  
Vol 139 ◽  
pp. 109784
Author(s):  
Bahaaudin Raffah ◽  
K. Berrada ◽  
S. Abdel-khalek ◽  
E.M. Khalil ◽  
Mohamed Ridza Wahiddin ◽  
...  
Keyword(s):  
Time Varying ◽  
Level Atom ◽  
Time Varying Frequency

Interactions of a two-level atom and a field with a time-varying frequency

2004 ◽  
Vol 69 (5) ◽  
Author(s):  
Yaping Yang ◽  
Jingping Xu ◽  
Gaoxiang Li ◽  
Hong Chen
Keyword(s):  
Time Varying ◽  
Level Atom ◽  
Time Varying Frequency

NUMBER-PHASE WIGNER FUNCTION FOR THE FIELD STATE OF A TWO-PHOTON JAYNES–CUMMINGS MODEL

1999 ◽  
Vol 13 (05) ◽  
pp. 143-152 ◽  
Author(s):  
AMITABH JOSHI ◽  
HO TRUNG DUNG
Keyword(s):  
Wigner Function ◽  
Photon Number ◽  
Single Mode ◽  
Two Photon ◽  
Photon Transition ◽  
Mode Field ◽  
Level Atom ◽  
Field State

The number-phase Wigner function W NP (defined in Refs. 3 and 4) has been studied for the field state of a two-level atom undergoing two-photon transition in a single mode field sustained in an ideal cavity. The photon number and the phase observables are graphically represented by this function W NP and thus their complementarity can be directly studied at any time for any initial atomic as well as field state.

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