-Level Coherence Vector and Higher Conservation Laws in Quantum Optics and Quantum Mechanics
- 21 September 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 47 (12) , 838-841
- https://doi.org/10.1103/physrevlett.47.838
Abstract
The presence of unitary group generators in the time evolution of -level quantum systems is shown to suggest a class of new nonlinear constants of motion, and to permit the description of the evolution in terms of the rotations of a real coherence vector.
Keywords
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