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Nonlinear dynamic phenomena in macroscopic tunneling. (English) Zbl 1167.82325

Summary: Numerical simulations of the NLSE (or GPE) are presented demonstrating emission of short pulses of the matter (light) density formed in the course of tunneling in wave-guided light and/or trapped BEC. The phenomenon is observed under various conditions, for nonlinearities of different signs, zero nonlinearity included. We study, both numerically and analytically, pulsations of matter (light) remaining within the trap and use the results in order to induce emission of sequential pulses by properly narrowing the trap. This allows us to propose a mechanism for a realization of Atom Pulse Laser.

MSC:

82C10 Quantum dynamics and nonequilibrium statistical mechanics (general)
35Q55 NLS equations (nonlinear Schrödinger equations)
35Q51 Soliton equations
78A60 Lasers, masers, optical bistability, nonlinear optics
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