Universal invariants of quantum-mechanical and optical systems
JOSA A, Vol. 17, Issue 12, pp. 2403-2410 (2000)
http://dx.doi.org/10.1364/JOSAA.17.002403
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Abstract
We give a brief review of the theory of quantum and optical universal invariants, i.e., certain combinations of the second- and higher-order moments (variances) of quantum-mechanical operators or the transverse phase-space coordinates of optical paraxial beams that are preserved in time (or along the axis of the beam) independently of the concrete form of the coefficients of the Hamiltonian or the parameters of the optical system, provided that the effective Hamiltonian is either a generic quadratic form of the generalized coordinate-momenta operators or a linear combination of generators of certain finite-dimensional algebras. Using the phase-space representation of quantum mechanics (paraxial optics) in terms of the Wigner function, we elucidate the relation between the quantum invariants and the classical universal integral invariants of Poincaré and Cartan. The specific features of the Gaussian beams are discussed as examples.
© 2000 Optical Society of America
[Optical Society of America ]
OCIS Codes
(000.1600) General : Classical and quantum physics
(030.6600) Coherence and statistical optics : Statistical optics
(060.2310) Fiber optics and optical communications : Fiber optics
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(350.5500) Other areas of optics : Propagation
Citation
Victor V. Dodonov and Olga V. Man’ko, "Universal invariants of quantum-mechanical and optical systems," J. Opt. Soc. Am. A 17, 2403-2410 (2000)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-17-12-2403
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