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ID 18705
file
creator
Takeuchi, Shigeki
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 threedimensional 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.
journal title
Physical Review A. Atomic, Molecular, and Optical Physics
volume
Volume 69
issue
Issue 4
start page
042108-1
end page
042108-8
date of issued
2004-04-23
publisher
American Physical Society
issn
1094-1622
ncid
publisher doi
language
eng
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
Copyright (c) 2004 American Physical Society.
relation url
department
Graduate School of Advanced Sciences of Matter