Purification of quantum state through Zeno-like measurements

Kazuya Yuasa*, Hiromichi Nakazato, Tomoko Takazawa

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


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 languageEnglish
Pages (from-to)34-37
Number of pages4
Journaljournal of the physical society of japan
Issue numberSUPPL.C
Publication statusPublished - 2003


  • Purification of quantum states
  • Quantum Zeno effect
  • Repeated measurement

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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