Distillation of entanglement between distant systems by repeated measurements on an entanglement mediator

Journal Article · Mon Nov 01 00:00:00 EST 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.70.052316· OSTI ID:20646192

Compagno, G; Messina, A; Napoli, A ^[1]; Nakazato, Hiromichi; Unoki, Makoto; Yuasa, Kazuya ^[2]

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1. INFM, MURST, and Dipartimento di Scienze Fisiche ed Astronomiche dell'Universita di Palermo, Via Archirafi 36, 90123 Palermo (Italy)
2. Department of Physics, Waseda University, Tokyo 169-8555 (Japan)

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.

• OSTI ID: 20646192
• Journal Information: Physical Review. A, Vol. 70, Issue 5; Other Information: DOI: 10.1103/PhysRevA.70.052316; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

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