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Preparation and entanglement purification through two-step measurements
Citation
Qiu, N., Wang, S., Kwek, L. C., & Wang, X.-B. (2012). Preparation and entanglement purification through two-step measurements. Physical Review A, 86(1), Article 012313. https://doi.org/10.1103/PhysRevA.86.012313
Abstract
A method of purification through Zeno-like measurements has been proposed by Nakazato and co-workers [H. Nakazato, T. Takazawa, and K. Yuasa, Phys. Rev. Lett. 90, 060401 (2003); H. Nakazato, M. Unoki, and K. Yuasa, Phys. Rev. A 70, 012303 (2004)]. A series of frequent measurements on a quantum system is demonstrated to result in the purification of another quantum system in interaction with the former. Inspired by this idea, we have designed a strategy to obtain entangled states through only two measurements. A deterministic purification method is also provided in this article.
Date Issued
2012
Publisher
American Physical Society
Journal
Physical Review A