A scheme for protecting one-qubit information against erasure error
Chui-Ping Yang; Shih-I Chu; Siyuan Han
Журнал:
Journal of Optics B: Quantum and Semiclassical Optics
Дата:
2002-10-01
Аннотация:
We 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.
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