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

G. Compagno, A. Messina, Hiromichi Nakazato, A. Napoli, Makoto Unoki, and Kazuya Yuasa
Phys. Rev. A 70, 052316 – Published 18 November 2004

Abstract

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.

  • Figure
  • Figure
  • Received 12 May 2004

DOI:https://doi.org/10.1103/PhysRevA.70.052316

©2004 American Physical Society

Authors & Affiliations

G. Compagno1,*, A. Messina1,†, Hiromichi Nakazato2,‡, A. Napoli1,§, Makoto Unoki2, and Kazuya Yuasa2,∥

  • 1INFM, MURST, and Dipartimento di Scienze Fisiche ed Astronomiche dell’Università di Palermo, Via Archirafi 36, 90123 Palermo, Italy
  • 2Department of Physics, Waseda University, Tokyo 169-8555, Japan

  • *Electronic address: compagno@fisica.unipa.it
  • Electronic address: messina@fisica.unipa.it
  • Electronic address: hiromici@waseda.jp
  • §Electronic address: napoli@fisica.unipa.it
  • Electronic address: yuasa@hep.phys.waseda.ac.jp

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 70, Iss. 5 — November 2004

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review A

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×