Determining eigenvalues of a density matrix with minimal information in a single experimental setting

Tohru Tanaka, Yukihiro Ota, Mitsunori Kanazawa, Gen Kimura, Hiromichi Nakazato, Franco Nori

研究成果: Article

7 引用 (Scopus)

抜粋

Eigenvalues of a density matrix characterize well the quantum state's properties, such as coherence and entanglement. We propose a simple method to determine all the eigenvalues of an unknown density matrix of a finite-dimensional system in a single experimental setting. Without fully reconstructing a quantum state, eigenvalues are determined with the minimal number of parameters obtained by a measurement of a single observable. Moreover, its implementation is illustrated in linear optical and superconducting systems.

元の言語English
記事番号012117
ジャーナルPhysical Review A - Atomic, Molecular, and Optical Physics
89
発行部数1
DOI
出版物ステータスPublished - 2014 1 21

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

フィンガープリント Determining eigenvalues of a density matrix with minimal information in a single experimental setting' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

  • これを引用