Purification of Quantum State through Zeno-like Measurements

Details Purification of Quantum State through Zeno-like Measurements Purification of Quantum State through Zeno-like Measurements

2004-02-25

arxiv.org/abs/quant-ph/0402183v1

J. Phys. Soc. Jpn. 72 Suppl. C (2003) 34-37

Physics

Quantum Physics

4 pages, 1 figure; Contribution to the Proceedings of "Waseda International Symposium on Fundamental Physics: New Perspectives

Scientific paper

We present a novel procedure to purify quantum states, i.e., purification through Zeno-like measurements. By simply repeating one and the same measurement on a quantum system, one can purify another system in interaction with the former. The conditions for the (efficient) purification are specified on a rather general setting, and the framework of the method possesses wide applicability. It is explicitly demonstrated on a specific setup that the purification becomes very efficient by tuning relevant parameters.

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