Phys. Rev. Lett. 103, 200501 (2009) [4 pages]Geometric Entangling Gates in Decoherence-Free Subspaces with Minimal RequirementsReceived 30 March 2009; published 10 November 2009 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. © 2009 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.103.200501
DOI:
10.1103/PhysRevLett.103.200501
PACS:
03.67.Lx, 03.65.Vf, 03.65.Yz, 42.50.Pq
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