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Type: Artigo de periódico
Title: Quantum channels in random spin chains
Author: Hoyos, JA
Rigolin, G
Abstract: We study the entanglement between pairs of qubits in a random antiferromagnetic spin-1/2 chain at zero temperature. We show that some very distant pairs of qubits are highly entangled, being almost pure Bell states. Furthermore, the probability to obtain such spin pairs is proportional to the chain disorder strength and inversely proportional to the square of their separation.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevA.74.062324
Date Issue: 2006
Appears in Collections:Unicamp - Artigos e Outros Documentos

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