Geometric entangling gates in decoherence-free subspaces with minimal requirements

We introduce a new strongly driven dispersive atom-cavity interaction and develop a new scheme for implementing the nontrivial entangling gates for two logical qubits in decoherence-free subspaces (DFSs). Our scheme combines the robust advantages of DFS and the geometric phase. Moreover, only two ne...

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Bibliographic Details
Published inPhysical review letters Vol. 103; no. 20; p. 200501
Main Authors Feng, Xun-Li, Wu, Chunfeng, Sun, Hui, Oh, C H
Format Journal Article
LanguageEnglish
Published United States 13.11.2009
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Summary:We introduce a new strongly driven dispersive atom-cavity interaction and develop a new scheme for implementing the nontrivial entangling gates for two logical qubits in decoherence-free subspaces (DFSs). Our scheme combines the robust advantages of DFS and the geometric phase. Moreover, only two neighboring physical qubits, which encode a logical qubit, are required to undergo the collective dephasing in our scheme.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.103.200501