Resonant scheme for realizing quantum phase gates for two separate atoms via coupled cavities

We propose a scheme for realizing conditional quantum phase gates for two atoms that are distributed in two coupled cavities. Due to the resonant interaction in temporal evolution of the entire system, the gate operation time is greatly reduced as compared with that of the nonresonant schemes. We st...

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Bibliographic Details
Published in:Optics communications 2010-08, Vol.283 (15), p.3052-3057
Main Authors: Yang, Zhen-Biao, Xia, Yan, Zheng, Shi-Biao
Format: Article
Language:English
Subjects:
Cavity quantum electrodynamics
micromasers
Coupled cavities
Defects
Evolution
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Gates
Holes
Optics
Physics
Quantum optics
Quantum phase gate
Resonant interaction
Resonant interactions
Separate atoms
Temporal logic
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Summary:We propose a scheme for realizing conditional quantum phase gates for two atoms that are distributed in two coupled cavities. Due to the resonant interaction in temporal evolution of the entire system, the gate operation time is greatly reduced as compared with that of the nonresonant schemes. We study the influence of imperfections in the interaction and the effect of decoherence and find the gate to be robust. We discuss the issue related to the practical implementation and show that the gate is accessible within the current cavity QED technology.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2010.03.065