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Quantum-state tomography for spin-l systems

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Title: Quantum-state tomography for spin-l systems
Authors: Hofmann, Holger F. Browse this author
Takeuchi, Shigeki2 Browse this author →KAKEN DB
Authors(alt): 竹内, 繁樹2
Issue Date: 23-Apr-2004
Publisher: American Physical Society
Journal Title: Physical Review A
Volume: 69
Start Page: 042108
Publisher DOI: 10.1103/PhysRevA.69.042108
Abstract: We show that the density matrix of a spin-l system can be described entirely in terms of the measurement statistics of projective spin measurements along a minimum of 4l + 1 different spin directions. It is thus possible to represent the complete quantum statistics of any N-level system within the spherically symmetric three-dimensional space defined by the spin vector. An explicit method for reconstructing the density matrix of a spin-1 system from the measurement statistics of five nonorthogonal spin directions is presented and the generalization to spin-l systems is discussed.
Rights: Copyright © 2004 American Physical Society
Type: article
Appears in Collections:電子科学研究所 (Research Institute for Electronic Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 竹内 繁樹

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