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International Journal of Theoretical Physics

Classical Communication Cost and Remote Preparation of the Two-Atom Maximally Entangled State

Yan Xia, Jie Song, He‐Shan Song

Published May 19, 2008• 8 citations
Publisher
DOI
10.1007/s10773-008-9758-2

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We investigate remote state preparation (RSP) via a non-maximally entangled channel for three cases: a general qubit; a special ensemble of qubits (qubit states on the equator of the Bloch sphere); and an asymptotic limit of N copies of a general state. The results show that the classical communication cost of RSP for the two latter cases can be less than that of teleportation, but for the first case, in a restricted setting, the classical communication cost is equal to that of teleportation. Whether or not this is the case for a more general setting is still an open question.
We investigate remote state preparation (RSP) via a non-maximally entangled channel for three cases:a general qubit;a special ensemble of qubits (qubit states on the equator of the Bloch sphere);and an asymptotic limit of N copies of a general state.The results show that the classical communication cost of RSP for the two latter cases can be less than that of teleportation,but for the first case,in a restricted setting,the classical communication cost is equal to that of teleportation.Whether or not this is the case for a more general setting is still an open question.