Dynamical tunneling of a Bose-Einstein condensate in periodically driven systems

Autor:	Shrestha, R. K., Ni, J., Lam, W. K., Summy, G. S., Wimberger, S.
Rok vydání:	2013
Předmět:	Quantum Physics Condensed Matter - Quantum Gases Nonlinear Sciences - Chaotic Dynamics
Zdroj:	Phys. Rev. E vol. 88, 034901 (2013)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevE.88.034901
Popis:	We report measurements of dynamical tunneling rates of a Bose-Einstein condensate across a barrier in classical phase space. The atoms are initially prepared in quantum states that extend over a classically regular island region. We focus on the specific system of quantum accelerator modes of the kicked rotor in the presence of gravity. Our experimental data is supported by numerical simulations taking into account imperfections mainly from spontaneous emission. Furthermore, we predict experimentally accessible parameter ranges over which direct tunneling could be readily observed if spontaneous emission was further suppressed. Altogether, we provide a proof-of-principle for the experimental accessibility of dynamical tunneling rates in periodically driven systems. Comment: Improved version
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1305.1828 Zobrazit plný text záznamu View this record from Arxiv