Schemes for remotely preparing a class of three-qubit W states based on bipartite maximally and non-maximally entangled quantum channels

Abstract

Abstract:

Two schemes are put forward to remotely implement the preparation of a class of three-qubit W states, which employ maximally entangled states and non-maximally entangled states as the quantum channels, respectively. In the course of the preparations, some local quantum operations including three-qubit projective measurements and unitary transformations are required. We canonically work out the success probability and classical information cost. The result shows that both schemes can be faithfully achieved in a probabilistic manner. Furthermore, we have some discussions on the properties of the presented schemes and evaluate their experimental feasibility. It is found that, the success probability can be doubled if the prepared states belong to some special ensembles, and our schemes can be well implemented with the current technologies.

Key words: quantum optics, remote state preparation, entanglement, W state, classical information cost

CLC Number:

O431.2

WANG Dong，YE Liu. Schemes for remotely preparing a class of three-qubit W states based on bipartite maximally and non-maximally entangled quantum channels[J]. J4, 2012, 29(3): 330-338.

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