Dynamics of a single-mode field interacting with a Λ-type three-level atom

Zhou, Qingchun; Zhu, Shi-Liang

doi:10.1016/j.optcom.2004.12.013

Cited by 27 publications

(12 citation statements)

References 23 publications

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“…For the present model (including a 'three-level' atom in the Λ-type configuration), the atomic inversion, which is introduced as the difference between the excited-state and ground-state probabilities, may be defined as follows [34,35]:…”

Section: Atomic Population Inversionmentioning

confidence: 99%

“…We are now in a position to examine the atomic dynamics, in particular the dynamics of an important quantity, namely atomic population inversion. For the present model (including a 'three-level' atom in the Λ-type configuration), the atomic inversion, which is introduced as the difference between the excited-state and ground-state probabilities, may be defined as follows [34,35]:…”

Section: Atomic Population Inversionmentioning

confidence: 99%

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Dynamics of entanglement of a three-level atom in motion interacting with two coupled modes including parametric down conversion

Faghihi

Tavassoly

Hatami

2014

Physica A: Statistical Mechanics and its Applications

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In this paper, a model by which we study the interaction between a motional three-level atom and two-mode field injected simultaneously in a bichromatic cavity is considered; the three-level atom is assumed to be in a Λ-type configuration. As a result, the atom-field and the field-field interaction (parametric down conversion) will be appeared. It is shown that, by applying a canonical transformation, the introduced model can be reduced to a well-known form of the generalized Jaynes-Cummings model. Under particular initial conditions, which may be prepared for the atom and the field, the time evolution of state vector of the entire system is analytically evaluated. Then, the dynamics of atom by considering 'atomic population inversion' and two different measures of entanglement, i.e., 'von Neumann entropy' and 'idempotency defect' is discussed, in detail. It is deduced from the numerical results that, the duration and the maximum amount of the considered physical quantities can be suitably tuned by selecting the proper field-mode structure parameter p and the detuning parameters.

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Section: Atomic Population Inversionmentioning

confidence: 99%

Section: Atomic Population Inversionmentioning

confidence: 99%

Dynamics of entanglement of a three-level atom in motion interacting with two coupled modes including parametric down conversion

Faghihi

Tavassoly

Hatami

2014

Physica A: Statistical Mechanics and its Applications

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“…A tentative approach to entanglement measures for a system of a three-level atom interacting with a quantized cavityfield has been introduced [39]. Furthermore, the evolution of the (atomic) field entropy for the three-level atom one-mode [40][41][42][43][44][45][46][47][48][49][50][51] and two-mode [52][53][54][55] model has been studied. On the other hand, the system of a four-level atom interacting with a single mode of electromagnetic field has been investigated [56][57][58][59][60][61].…”

Section: Introductionmentioning

confidence: 99%

Entanglement of a System of an Indirectly Linked Two-Coupled-Cavity through an Optical Fiber Cable for Single Excitation Atomic States in the Presence of an External Field

Hanoura

2021

Preprint

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The dynamics of the quantum entropies of a system of two cavities coupled by an optical fiber cable, each cavity contains a two-level atom interacting with a single electromagnetic field in addition to an external classical field, is investigated. Under canonical transformations, the considered Hamiltonian is diagonalized. Effective Hamiltonians in three different limiting regimes: namely large optical fiber cable coupling bstrength, large detunig, and comparable detuning and optical fiber cable coupling strength, are derived. The ith ¯ -tom are respectively prepared in the superposition coherent and the ground states while the fields are prepared in the vacuum states. An analytical expression for the solution of the Schr¨odinger equation for each dispersive is derived. The degree of entanglement (DEM) is studied by using von Neumann atomic entropies. The influences of both the optical fiber cable coupling strength and the detuning on the evolution of the DEM ”their values are closely chosen to be compatible with the imposed restrictions for the applications of the different regimes” are analyzed. General conclusions reached are illustrated by numerical results.

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“…A tentative approach to entanglement measures for a system of a three-level atom interacting with a quantized cavity-field has been introduced [36]. Furthermore, the evolution of the (atomic) field entropy for the threelevel atom one-mode [37][38][39][40][41][42][43][44] and two-mode [45,46] model has been studied. On the other hand, the system of a four-level atom interacting with a single mode of electromagnetic field has been studied [28,[47][48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

Quantum Entropy of a Four-Level Atom with Arbitrary Nonlinearities

2012

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General formalisms of a four-level atom in different configurations interacting with a single mode quantized electromagnetic field under multi-photon process with additional forms of nonlinearities of both the field and the intensity-dependent atom-field coupling are investigated. Analytical expressions for the time unitary evolution operator and density operator are obtained. The atom is prepared in its upper most and the field is prepared in a binomial state. The effects of the mean photon number, photon multiplicity, detuning, Kerr-like medium and the intensity-dependent coupling functional on the entropy are considered. General conclusions reached are illustrated by numerical results.

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Dynamics of a single-mode field interacting with a Λ-type three-level atom

Cited by 27 publications

References 23 publications

Dynamics of entanglement of a three-level atom in motion interacting with two coupled modes including parametric down conversion

Dynamics of entanglement of a three-level atom in motion interacting with two coupled modes including parametric down conversion

Entanglement of a System of an Indirectly Linked Two-Coupled-Cavity through an Optical Fiber Cable for Single Excitation Atomic States in the Presence of an External Field

Quantum Entropy of a Four-Level Atom with Arbitrary Nonlinearities

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