Distillation of entanglement between distant systems by repeated measurements on entanglement mediator
- Autori: Compagno, G.; Messina, A.; Nakazato, H.; Napoli, A.; Unoki, M.; Yuasa, K.
- Anno di pubblicazione: 2004
- Tipologia: Articolo in rivista (Articolo in rivista)
- OA Link: http://hdl.handle.net/10447/9886
A recently proposed purification method, in which Zeno-like measurements of a subsystem can bring about a distillation of another subsystem in interaction with the former, is utilized to yield entangled states between distant systems. It is shown that measurements of a two-level system, locally interacting with two other spatially separated uncoupled subsystems, can distill entangled states from the latter irrespective of the initial states of the two subsystems.