Measurement scheme for purity based on two two-body gates

H. Nakazato*, T. Tanaka, K. Yuasa, G. Florio, S. Pascazio

*この研究の対応する著者

研究成果: Article査読

17 被引用数 (Scopus)

抄録

A scheme for measuring the purity of a quantum system with a finite number of levels is presented. The method makes use of two √swap gates and hinges only on measurements performed on a reference system, prepared in a certain pure state and coupled with the target system. Neither tomographic methods, with the complete reconstruction of the state, nor interferometric setups are needed.

本文言語English
論文番号042316
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
85
4
DOI
出版ステータスPublished - 2012 4月 16

ASJC Scopus subject areas

  • 原子分子物理学および光学

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