Approximate and Conditional Teleportation of an Unknown Atomic State with Dissipative Two-Photon Interaction in Cavity QED System

In this paper, we investigate the entanglement between two two-level atoms non-resonantly in-teracting with a thermal field of a lossless one-mode resonator via degenerate two-photon transi-tions. On the basis of the exact solution of the time-dependent density matrix we calculate the negativity as a measure of atomic entanglement. We show that for separable initial atomic states a slight atom-field detuning may generate the high amount of atom-atom entanglement. The re-sults also show that for non-resonant atom-field interaction the entanglement induced by nonlin-ear two-photon interaction is smaller than that induced by one-photon interaction in contrast to the resonant interaction situation. For a Bell-type entangled initial atomic state we obtain that if the detuning increases, there is an appreciable decrease in the amplitudes of the negativity oscilla-tions. The results also show that elimination of the sudden death of entanglement for non-resonant two-photon atom-field interaction may take place.

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Harmonic generation in coherent two-photon interaction between high-power optical pulses and resonant media

Soviet Journal of Quantum Electronics ◽

10.1070/qe1981v011n02abeh005458 ◽

1981 ◽

Vol 11 (2) ◽

pp. 159-162 ◽

Cited By ~ 3

Author(s):

I A Poluéktov ◽

A V Nazarkin

Keyword(s):

Harmonic Generation ◽

High Power ◽

Optical Pulses ◽

Photon Interaction ◽

Two Photon

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Reference state contributions to the two-photon interaction corrections for the energy shifts in multicharged few-electron ions

Journal of Physics B Atomic Molecular and Optical Physics ◽

10.1088/0953-4075/28/17/011 ◽

1995 ◽

Vol 28 (17) ◽

pp. 3717-3727 ◽

Cited By ~ 10

Author(s):

L N Labzowsky ◽

M A Tokman

Keyword(s):

Reference State ◽

Photon Interaction ◽

Two Photon

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Effective two-photon interaction in two-resonator circuit QED system

Laser Physics Letters ◽

10.1088/1612-202x/aae787 ◽

2018 ◽

Vol 15 (12) ◽

pp. 125204

Author(s):

Haiming Yuan ◽

Chunfeng Wu ◽

Decun Li ◽

Mei Li ◽

Xun-Li Feng ◽

...

Keyword(s):

Circuit Qed ◽

Photon Interaction ◽

Two Photon

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Entanglement sudden death via two-photon processes in cavity QED

Journal of Physics B Atomic Molecular and Optical Physics ◽

10.1088/0953-4075/42/19/195507 ◽

2009 ◽

Vol 42 (19) ◽

pp. 195507 ◽

Cited By ~ 10

Author(s):

W B Cardoso ◽

A T Avelar ◽

B Baseia ◽

N G de Almeida

Keyword(s):

Sudden Death ◽

Cavity Qed ◽

Entanglement Sudden Death ◽

Two Photon

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Ultrastrong coupling effects in molecular cavity QED

Nanophotonics ◽

10.1515/nanoph-2019-0403 ◽

2020 ◽

Vol 9 (2) ◽

pp. 277-281 ◽

Cited By ~ 1

Author(s):

Jorge Calvo ◽

David Zueco ◽

Luis Martin-Moreno

Keyword(s):

Cavity Qed ◽

Molecular Vibrations ◽

Level System ◽

Coupling Effects ◽

Photon Interaction ◽

Exciton Coupling ◽

Energy Dynamics

AbstractThe spectrum and energy dynamics for a system that comprises a molecule interacting with a cavity photon is analyzed, taking into account the effect of both molecular vibrations and counter-rotating terms (CR) in the dipole Hamiltonian. The CR terms do not have a strong effect on the spectrum even for moderately large values of the exciton-photon interaction. However, it is shown that the polariton subspace is governed by an effective Quantum-Rabi Hamiltonian, where polaritons act as a two-level system and the phonons play the role of cavity photons. The effect of the CR terms is amplified in the dynamics: as the vibrations reduce the effective photon-exciton coupling, small Bloch-Siegert energy shifts can bring the system out of resonance.

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