Quantum dynamics of the nonlinear rotator and the effects of continual spin measurement

Sanders, B. C. (1989) Quantum dynamics of the nonlinear rotator and the effects of continual spin measurement. Physical Review A, 40 5: 2417-2427. doi:10.1103/PhysRevA.40.2417

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Author Sanders, B. C.
Title Quantum dynamics of the nonlinear rotator and the effects of continual spin measurement
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
2469-9926
Publication date 1989-01-01
Sub-type Article (original research)
DOI 10.1103/PhysRevA.40.2417
Open Access Status File (Publisher version)
Volume 40
Issue 5
Start page 2417
End page 2427
Total pages 11
Place of publication College Park, MD, United States
Publisher American Physical Society
Subject 3100 Physics and Astronomy
3107 Atomic and Molecular Physics, and Optics
Abstract The quantum and classical dynamics of the nonlinear oscillator are contrasted by comparing the evolution of the quantum Q function with that of a similar classical probability distribution. The quantum nonlinear rotator is shown to generate a superposition of two distinct coherent states from a coherent-state input. Measurements of the angular-momentum components and the signature of a superposition state are discussed. The effects of a continual measurement of one angular-momentum component are introduced into the model, and its effects on quantum coherences are shown to degrade the quantum coherence effects. We present a quantum optical model that obeys the nonlinear rotator dynamics and can generate superpositions of SU(2) coherent states of the two-mode electromagnetic field.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
 
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