Quasiparticle tunneling in a periodically driven bosonic Josephson junction
Abstract
A resonantly driven bosonic Josephson junction supports stable collective excitations, or quasiparticles, which constitute analogs of the Trojan wave packets previously explored with Rydberg atoms in strong microwave fields. We predict a quantum beating effect between such symmetry-related many-body Trojan states taking place on time scales which are long in comparison with the driving period. Within a mean-field approximation, this quantum beating can be regarded as a manifestation of dynamical tunneling. On the full N -particle level, the beating phenomenon leads to an experimentally feasible, robust strategy for probing highly entangled mesoscopic states.
- Publication:
-
Physical Review A
- Pub Date:
- November 2014
- DOI:
- 10.1103/PhysRevA.90.053622
- arXiv:
- arXiv:1411.1632
- Bibcode:
- 2014PhRvA..90e3622G
- Keywords:
-
- 03.75.Lm;
- 03.75.Gg;
- 05.45.Mt;
- 67.85.-d;
- Tunneling Josephson effect Bose-Einstein condensates in periodic potentials solitons vortices and topological excitations;
- Entanglement and decoherence in Bose-Einstein condensates;
- Quantum chaos;
- semiclassical methods;
- Ultracold gases trapped gases;
- Condensed Matter - Quantum Gases
- E-Print:
- 8 pages, 5 figures