One scheme for remote quantum logical gates with the assistance of a classical field

A scheme, based on the two two-level atoms resonantly driven by the classical field separately trapped in two cavities coupled by an optical fibre, for the implementation of remote two-qubit gates is investigated. It is found that the quantum controlled-phase and swap gates can be achieved with the...

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Bibliographic Details
Published in:Chinese physics B 2010, Vol.19 (1), p.61-65, Article 010307
Main Author: 李艳玲 方卯发 曾可
Format: Article
Language:English
Subjects:
Dissipation
Gates
Holes
Joining
Optical fibers
Spontaneous emission
经典场
耦合腔
自发辐射
量子比特
量子逻辑门
驱动原子
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Summary:A scheme, based on the two two-level atoms resonantly driven by the classical field separately trapped in two cavities coupled by an optical fibre, for the implementation of remote two-qubit gates is investigated. It is found that the quantum controlled-phase and swap gates can be achieved with the assistance of the classical field when there are detunings of the coupling quantum fields. Moreover, the influence of the dissipation of the cavities and the optical fibre is analysed while the spontaneous emission of the atoms can be effectively suppressed by introducing A-type atoms.
ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/19/1/010307