Population dynamics of excited atoms in non-Markovian environments at zero and finite temperature

Zou, Hong-Mei; Mao-Fa, Fang

doi:10.1088/1674-1056/24/8/080304

Cited by 5 publications

(5 citation statements)

References 42 publications

(40 reference statements)

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“…If λ > 2γ 0 , the relaxation time is greater than the reservoir correlation time and the dynamical evolution of the system is essentially Markovian. For λ < 2γ 0 , the reservoir correlation time is greater than or of the same order as the relaxation time and non-Markovian effects become relevant [28,29,30]. When the spectrum is peaked on the frequency of the state |E 1− , i.e.…”

Section: Dissipative Jaynes-cummings Modelmentioning

confidence: 99%

Squeezing of light field in a dissipative Jaynes–Cummings model

Zou

Mao-Fa

2016

Journal of Modern Optics

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Received XX; revised manuscript received X XX) Based on the time-convolutionless master-equation approach, we investigate squeezing of light field in a dissipative Jaynes-Cummings model. The results show that squeezing light can be generated when the atom transits to a ground state from an excited state, and then a collapse-revival phenomenon will occur in the squeezing of light field due to atom-cavity coupling. Enhancing the atom-cavity coupling can increase the frequency of the collapse-revival of squeezing. The stronger the non-Markovian effect is, the more obvious the collapse-revival phenomenon is. The oscillatory frequency of the squeezing is dependents on the resonant frequency of the atom-cavity.

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Section: Dissipative Jaynes-cummings Modelmentioning

confidence: 99%

Squeezing of light field in a dissipative Jaynes–Cummings model

Zou

Mao-Fa

2016

Journal of Modern Optics

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“…For λ < 2γ 0 , the reservoir correlation time is greater than or of the same order as the relaxation time and non-Markovian effects become relevant. [27][28][29] When the spectrum is peaked on the frequency of the state |ϕ 1 ⟩, i.e., ω 1 = ω 0 − Ω , the decay rates for the two dressed states |ϕ 1 ⟩ and |ϕ 2 ⟩ are respectively expressed as [24] γ…”

Section: Dissipative Two-atom Systemmentioning

confidence: 99%

Collapse–revival of squeezing of two atoms in dissipative cavities

Zou¹,

Mao-Fa²

2016

Chinese Phys. B

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Based on the time-convolutionless master-equation approach, we investigate the squeezing dynamics of two atoms in dissipative cavities. We find that the atomic squeezing is related to initial atomic states, atom-cavity couplings, non-Markovian effects and resonant frequencies of an atom and its cavity. The results show that a collapse-revival phenomenon will occur in the atomic squeezing and this process is accompanied by the buildup and decay of entanglement between two atoms. Enhancing the atom-cavity coupling can increase the frequency of the collapse-revival of the atomic squeezing. The stronger the non-Markovian effect is, the more obvious the collapse-revival phenomenon is. In particular, if the atomcavity coupling or the non-Markovian effect is very strong, the atomic squeezing will tend to a stably periodic oscillation in a long time. The oscillatory frequency of the atomic squeezing is dependent on the resonant frequency of the atom and its cavity.

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“…we can acquire the matrix elements at all times from (2) 11 (t) = a 11 11 11 (0), 12 (t) = a 12 12 12 (0), 13 (t) = a 13 13 13 (0), 22 (t) = a 22 22 22 (0), 23 (t) = a 23 23 23 (0),…”

Section: Two-atom System In Dissipative Cavitiesmentioning

confidence: 99%

“…Sinayskiy et al [21] analyzed the population dynamics of an initial state of the system in the Ohmic reservoirs by the time-convolutionless master-equation method. Zou and Fang [22] investigate the population of excited atoms in Lorentzian reservoirs and Ohmic reservoirs at zero and finite temperature by the time-convolutionless masterequation method. The authors in Ref.…”

Section: Introductionmentioning

confidence: 99%

Population Dynamics of Excited Atoms in Dissipative Cavities

2016

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Population dynamics of excited atoms in dissipative cavities is investigated in this work. We present a method of controlling populations of excited atoms in dissipative cavities. For the initial state |ee AB |00 ab , the repopulation of excited atoms can be obtained by using atom-cavity couplings and non-Markovian effects after the atomic excited energy decays to zero. For the initial state |gg AB |11 ab , the two atoms can also be populated to the excited states from the initial ground states by using atom-cavity couplings and nonMarkovian effects. And the stronger the atom-cavity coupling or the non-Markovian effect is, the larger the number of repopulation of excited atoms is. Particularly, when the atomcavity coupling or the non-Markovian effect is very strong, the number of repopulation of excited atoms can be close to one in a short time and will tend to a steady value in a long time.

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Population dynamics of excited atoms in non-Markovian environments at zero and finite temperature

Cited by 5 publications

References 42 publications

Squeezing of light field in a dissipative Jaynes–Cummings model

Squeezing of light field in a dissipative Jaynes–Cummings model

Collapse–revival of squeezing of two atoms in dissipative cavities

Population Dynamics of Excited Atoms in Dissipative Cavities

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