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Type: Artigo de periódico
Title: Bipartite quantum channels using multipartite cluster-type entangled coherent states
Author: Munhoz, PP
Roversi, JA
Vidiella-Barranco, A
Semiao, FL
Abstract: We propose a particular encoding for bipartite entangled states derived from multipartite cluster-type entangled coherent states (CTECSs). We investigate the effects of amplitude damping on the entanglement content of this bipartite state, as well as its usefulness as a quantum channel for teleportation. We find interesting relationships among the amplitude of the coherent states constituting the CTECSs, the number of subsystems forming the logical qubits (redundancy), and the extent to which amplitude damping affects the entanglement of the channel. For instance, in the sense of sudden death of entanglement, given a fixed value of the initial coherent state amplitude, the entanglement life span is shortened if redundancy is increased.
Country: EUA
Editor: Amer Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.81.042305
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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