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Open Quantum Systems Decoherence Entanglement Theory Quantum Correlations

Classical communication and entanglement cost in preparing a class of multi-qubit states

arXiv

Authors: Zhan-jun Zhang

Year

2007

Paper ID

49327

Status

Preprint

Abstract Read

~2 min

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Abstract

Recently, several similar protocols[J. Opt. B 4 (2002) 380; Phys. Lett. A 316 (2003) 159; Phys. Lett. A 355 (2006) 285; Phys. Lett. A 336 (2005) 317] for remotely preparing a class of multi-qubit states (i.e, α|0 ... 0>+β|1... 1>) are proposed, respectively. In this paper, by applying the controlled-not (CNOT) gate, a new simple protocol is proposed for remotely preparing such class of states. Compared to the previous protocols, both classical communication cost and required quantum entanglement in our protocol are remarkably reduced. Moreover, the difficulty of identifying some quantum states in our protocol is also degraded. Hence our protocol is more economical and feasible.

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This paper contributes to the Entanglement Theory & Quantum Correlations research area in the Quantum Articles archive.
It adds a 2007 reference point for readers tracking recent quantum research.
Recently, several similar protocols[J.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:0708.2536 [2] arXiv https://arxiv.org/abs/0708.2536 [3] Publisher https://arxiv.org/abs/0708.2536

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