Chui-Ping Yang et al 2002 J. Opt. B: Quantum Semiclass. Opt. 4 256 doi:10.1088/1464-4266/4/5/305
Chui-Ping Yang1, Shih-I Chu1 and Siyuan Han2
Show affiliationsWe propose a scheme for protecting one-qubit information against one erasure. The scheme operates essentially by distributing quantum information over four qubits. Two versions of the method are considered: one of them is based on two spatially separated pairs of qubits, and the other is based on one pair of qubits and two spatially separated qubits.
03.67.Lx Quantum computation architectures and implementations
03.67.Pp Quantum error correction and other methods for protection against decoherence
03.65.Yz Decoherence; open systems; quantum statistical methods
03.67.Mn Entanglement measures, witnesses, and other characterizations
Issue 5 (October 2002)
Received 25 January 2002, in final form 14 May 2002
Published 20 June 2002
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