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Purification of Quantum State through Zeno-like Measurements

Kazuya Yuasa·Hiromichi Nakazato·Tomoko Takazawa
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Abstract

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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Kazuya Yuasa, Hiromichi Nakazato, Tomoko Takazawa. 2004-02-25. Purification of Quantum State through Zeno-like Measurements. https://doi.org/10.1143/jpsjs.72sc.34

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