Purification of quantum state through Zeno-like measurements

Kazuya Yuasa; Hiromichi Nakazato; Tomoko Takazawa

doi:10.1143/JPSJS.72SC.34

Purification of quantum state through Zeno-like measurements

Kazuya Yuasa^*, Hiromichi Nakazato, Tomoko Takazawa

^*Corresponding author for this work

School of Advanced Science and Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

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.

Original language	English
Pages (from-to)	34-37
Number of pages	4
Journal	journal of the physical society of japan
Volume	72
Issue number	SUPPL.C
DOIs	https://doi.org/10.1143/JPSJS.72SC.34
Publication status	Published - 2003

Keywords

Purification of quantum states
Quantum Zeno effect
Repeated measurement

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJS.72SC.34

Cite this

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AU - Nakazato, Hiromichi

AU - Takazawa, Tomoko

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AB - 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.

KW - Purification of quantum states

KW - Quantum Zeno effect

KW - Repeated measurement

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Purification of quantum state through Zeno-like measurements

Abstract

Keywords

ASJC Scopus subject areas

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