Macroscopic superposition states in rotating ring lattices
arXiv:0802.4309 · doi:10.1080/09500340802411997
Abstract
We investigate the effects of rotation on one-dimensional ultracold bosons confined to optical ring lattices. First, we show that there exists a critical rotation frequency at which the ground state of a weakly-interacting and integer-filled atomic gas is fragmented into a macroscopic superposition state with different circulation. Second, we point out several advantages of using slightly non-uniform ring lattices. Finally, we demonstrate that different quasi-momentum states can be distinguished in time-of-flight absorption imaging and propose to probe correlations via the many-body oscillations induced by a sudden change in the rotation frequency.
8 pages, 4 figures; PQE-2008 conference proceedings; minor corrections
References in corpus (13)
- Coherent Quantum Dynamics of a Superconducting Flux Qubit
- Many-particle entanglement with Bose--Einstein condensates
- Quantum Superposition States of Bose-Einstein Condensates
- Optical ferris wheel for ultracold atoms
- Quantum many particle systems in ring-shaped optical lattices
- Bose-Einstein Condensates in Rotating Lattices
- Topological Winding and Unwinding in Metastable Bose-Einstein Condensates
- Macroscopic superpositions of superfluid flows
- Generation of macroscopic superposition states in ring superlattices
- Lifshitz-like transition and enhancement of correlations in a rotating bosonic ring lattice
- Creation of macroscopic superposition states from arrays of Bose-Einstein condensates
- Creation of macroscopic superpositions of flow states with Bose-Einstein condensates
- Quasi-angular momentum of Bose and Fermi gases in rotating optical lattices