Efficient quantum-state transfer is achieved in a uniformly coupled spin-1/2 chain, with open boundaries, by application of local magnetic fields on the second and last-but-one spins, respectively. These effective barriers induce the appearance of two eigenstates, bilocalized at the edges of the chain, which allow a high-quality transfer also at relatively long distances. The same mechanism may be used to send an entire e-bit (e.g., an entangled qubit pair) from one to the other end of the chain
Quantum-state transfer via resonant tunneling through local-field-induced barriers / Lorenzo, S; Apollaro, Tjg; Sindona, Antonio; Plastina, Francesco. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 87:4(2013), pp. 042313.042313-1-042313.042313-8.
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Titolo: | Quantum-state transfer via resonant tunneling through local-field-induced barriers |
Autori: | |
Data di pubblicazione: | 2013 |
Rivista: | |
Citazione: | Quantum-state transfer via resonant tunneling through local-field-induced barriers / Lorenzo, S; Apollaro, Tjg; Sindona, Antonio; Plastina, Francesco. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 87:4(2013), pp. 042313.042313-1-042313.042313-8. |
Handle: | http://hdl.handle.net/20.500.11770/157552 |
Appare nelle tipologie: | 1.1 Articolo in rivista |