Quantum-state tomography for spin-l systems
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00018705
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
|