A scheme is proposed for the generation of a two-atom entangled state and an N -atom W state in two distant cavities via adiabatic passage. In the scheme, since only laser fields applied to an atom need be changed, the property can effectively reduce the number of operations for implementing the scheme in experiment. And there are no excited states involved during the operation process, so the atom's spontaneous emission can be omitted approximately. Furthermore, the scheme is robust against the amplitude fluctuations of some experimental parameters.A scheme is proposed for the generation of a two-atom entangled state and an N -atom W state in two distant cavities via adiabatic passage. In the scheme, since only laser fields applied to an atom need be changed, the property can effectively reduce the number of operations for implementing the scheme in experiment. And there are no excited states involved during the operation process, so the atom's spontaneous emission can be omitted approximately. Furthermore, the scheme is robust against the amplitude fluctuations of some experimental parameters.

Journal of Physics B Atomic Molecular and Optical PhysicsNov 13, 200737 citations

Generation of N-atom and 2N-atom W states in distant cavities via adiabatic passage

Jin-hua Zou

Optics CommunicationsNov 5, 20110 citations

Shortcuts to adiabatic passage for generation of W states of distant atoms

Kun-Huang Song, Ming-Feng Chen

Quantum Information ProcessingMay 13, 20163 citations

Deterministic generation of Greenberger-Horne-Zeilinger and W states for three distant atoms via adiabatic passage

Peijun Song, Xin‐You Lü, Liu-Gang Si +1 more

We propose two schemes for generating Greenberger-Horne-Zeilinger and W states of three distant atoms. In the present schemes, the atoms are individually trapped in three spatially separated optical cavities coupled by two optical fibres. Performing an adiabatic passage along dark states, the population of cavities and fibres excited is negligible under certain conditions. In addition, the spontaneous decay of atoms is also efficiently suppressed based on our proposals. Furthermore, the discussion about the entanglement fidelity is given and we point out that our schemes work robustly with small fluctuations of experimental parameters.We propose two schemes for generating Greenberger-Horne-Zeilinger and W states of three distant atoms. In the present schemes, the atoms are individually trapped in three spatially separated optical cavities coupled by two optical fibres. Performing an adiabatic passage along dark states, the population of cavities and fibres excited is negligible under certain conditions. In addition, the spontaneous decay of atoms is also efficiently suppressed based on our proposals. Furthermore, the discussion about the entanglement fidelity is given and we point out that our schemes work robustly with small fluctuations of experimental parameters.

Chinese Physics BMay 1, 20114 citations

Robust preparation of Greenberger-Horne-Zeilinger and W states of three distant atoms

Chang‐shui Yu, X. X. Yi, He‐Shan Song +1 more

Schemes to generate Greenberger-Horne-Zeilinger (GHZ) and $W$ states of three distant atoms are proposed in this paper. The schemes use the effects of quantum statistics of indistinguishable photons emitted by the atoms inside optical cavities. The advantages of the schemes are their robustness against detection inefficiency and asynchronous emission of the photons. Moreover, in Lamb-Dicke limit, the schemes do not require the simultaneous click of the detectors. This makes the schemes more realizable in experiments.Schemes to generate Greenberger-Horne-Zeilinger (GHZ) and $W$ states of three distant atoms are proposed in this paper. The schemes use the effects of quantum statistics of indistinguishable photons emitted by the atoms inside optical cavities. The advantages of the schemes are their robustness against detection inefficiency and asynchronous emission of the photons. Moreover, in Lamb-Dicke limit, the schemes do not require the simultaneous click of the detectors. This makes the schemes more realizable in experiments.

arXiv:0709.0802Physical Review AApr 6, 200789 citations

Deterministic Generation of W States for Any Number of Distant Atoms via Adiabatic Passage

Tianhui Qiu, Guojian Yang

International Journal of Theoretical PhysicsMar 5, 20132 citations

Schemes to generate Greenberger-Horne-Zeilinger (GHZ) and

W

states of three distant atoms are proposed in this paper. The schemes use the effects of quantum statistics of indistinguishable photons emitted by the atoms inside optical cavities. The advantages of the schemes are their robustness against detection inefficiency and asynchronous emission of the photons. Moreover, in Lamb-Dicke limit, the schemes do not require the simultaneous click of the detectors. This makes the schemes more realizable in experiments.