Generation of higher-order atomic dipole squeezing in a high-Q micromaser cavity. (VII). Entangled two-mode coherent states

Xie, Rong; Rao, Qin

doi:10.1016/s0378-4371(02)01012-9

Cited by 3 publications

(3 citation statements)

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“…It has been predicted that a number of physical systems [1,[23][24][25][26][27]] (e.g., four-wave mixing, two-photon laser, parametric amplifiers and Raman scattering) can generate squeezed states of the radiation field. Also, it is known that atomic dipole squeezing (ADS) [16] could be generated through many kinds of nonlinear optical processes [16,[28][29][30][31], such as resonance fluorescence, cooperative Dicke system, Rydberg atom maser, and so on. For the special case of a vacuum-field mode, Wodkiewicz et al [32] examined the relationship between ADS and field squeezing.…”

Section: Definition Of Atomic Dipole Squeezingmentioning

confidence: 99%

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Generation of dipole squeezing in a two-mode system with entangled coherent states of a quantized electromagnetic field

Rao

Xie

2003

Physica A: Statistical Mechanics and its Applications

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Two-mode quantized electromagnetic fields can be entangled and admit a large number of coherent states. In this paper, we consider a two-mode system that consists of a two-level atom interacting with a two-mode quantized electromagnetic field, which is initially prepared in an entangled two-mode coherent state, via a nondegenerate two-photon process in a lossless cavity.We study the quantum fluctuations in the two-mode system and investigate in detail the effects of detuning, Stark shift and atomic coherence on atomic dipole squeezing (ADS). We show that ADS strongly depends on the atomic coherence. It is found that the stronger the correlations between the two modes are involved, the more the ADS could be generated. The detuning or Stark shift has a destructive effect on ADS, but the combined effect of the detuning and Stark shift may lead to a regular, periodical and strong ADS pattern.

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Section: Definition Of Atomic Dipole Squeezingmentioning

confidence: 99%

“…Then, the atomic state is said to be squeezed if F 1 < 0 (or F 2 < 0). This is the general definition of ADS [16,[28][29][30][31].…”

Section: Definition Of Atomic Dipole Squeezingmentioning

confidence: 99%

Generation of dipole squeezing in a two-mode system with entangled coherent states of a quantized electromagnetic field

Rao

Xie

2003

Physica A: Statistical Mechanics and its Applications

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“…Among several classes of SU(1, 1) coherent states, we are interested in Barut-Girardello coherent states [18] and Perelomov coherent states [19] in this paper. The former may be generated by means of a process including the competition between nondegenerate parametric amplification and nondegenerate two-photon absorption, while the generation of the latter can be attained from the unitary evolution of two-mode number states driven by a nondegenerated parametric device [20]. It is noticed that SU(1, 1) coherent states reveal the nonclassical properties such as squeezing effect, nontrivial zero-point energy, violations of the Cauchy-Schwarz inequality, and fluctuation of uncertainty products [21,22].…”

Section: Introductionmentioning

confidence: 99%

SU(1,1) Coherent States for the Generalized Two-Mode Time-Dependent Quadratic Hamiltonian System

Choi

Yeon

2007

Int J Theor Phys

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The SU(1, 1) coherent states, so-called Barut-Girardello coherent state and Perelomov coherent state, for the generalized two-mode time-dependent quadratic Hamiltonian system are investigated through SU(1, 1) Lie algebraic formulation. Two-mode Schrödinger cat states defined as an eigenstate ofK 2 − are also studied. We applied our development to two-mode Caldirola-Kanai oscillator which is a typical example of the time-dependent quadratic Hamiltonian system. The time evolution of the quadrature distribution for the probability density in the coherent states are analyzed for the two-mode Caldirola-Kanai oscillator by plotting relevant figures.

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Generation of higher-order atomic dipole squeezing in a high-Q micromaser cavity. (VIII). Multi-photon interaction

Xie

Rao

2003

Physica A: Statistical Mechanics and its Applications

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In our preceding serial works, we have investigated the generation of higherorder atomic dipole squeezing (HOADS) in a high-Q micromaser cavity, discussing the effects of dynamic Stark shift, atomic damping, atomic coherence and nonlinear one-photon processes and different initial states (for example, correlated and uncorrelated states, superposition states, squeezed vacuum).In this paper, we continue to study HOADS in a high-Q micromaser cavity, but consider that the atom interacts with the optical field via a multi-photon transition process and that the initial atom is arbitrarily prepared. For a vacuum initial field, we demonstrate that HOADS cannot occur if the atom is initially prepared in a chaotic state and that a coherent atomic state generates less efficient and stable HOADS than an arbitrary one. It is found that large detuning may lead to enhanced and strong HOADS. PACS (numbers): 42.50. Dv, 42.50.Lc,

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Generation of higher-order atomic dipole squeezing in a high-Q micromaser cavity. (VII). Entangled two-mode coherent states

Cited by 3 publications

References 50 publications

Generation of dipole squeezing in a two-mode system with entangled coherent states of a quantized electromagnetic field

Generation of dipole squeezing in a two-mode system with entangled coherent states of a quantized electromagnetic field

SU(1,1) Coherent States for the Generalized Two-Mode Time-Dependent Quadratic Hamiltonian System

Generation of higher-order atomic dipole squeezing in a high-Q micromaser cavity. (VIII). Multi-photon interaction

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