Artículos de revistas
Quantum channels in random spin chains
Registro en:
Physical Review A. American Physical Soc, v. 74, n. 6, 2006.
1050-2947
WOS:000243166700050
10.1103/PhysRevA.74.062324
Autor
Hoyos, JA
Rigolin, G
Institución
Resumen
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. 74 6