Reproducible mesoscopic superpositions of Bose-Einstein condensates and mean-field chaos
arXiv:1008.0314 · doi:10.1103/PhysRevA.82.023620
Abstract
In a parameter regime for which the mean-field (Gross-Pitaevskii) dynamics becomes chaotic, mesoscopic quantum superpositions in phase space can occur in a double-well potential which is shaken periodically. For experimentally realistic initial states like the ground state of some 100 atoms, the emergence of mesoscopic quantum superpositions in phase space is investigated numerically. It is shown to be reproducible even if the initial conditions slightly change. While the final state is not a perfect superposition of two distinct phase-states, the superposition is reached an order of magnitude faster than in the case of the collapse and revival phenomenon. Furthermore, a generator of entanglement is identified.
7 pages, 7 png figures, accepted for publication in Phys. Rev. A
References in corpus (17)
- Squeezing and entanglement in a Bose-Einstein condensate
- Dynamical control of matter-wave tunneling in periodic potentials
- Single Particle Tunneling in Strongly Driven Double Well Potentials
- Observation of photon-assisted tunneling in optical lattices
- Exploring dynamic localization with a Bose-Einstein condensate
- Creation and detection of a mesoscopic gas in a non-local quantum superposition
- Quantum control and entanglement using periodic driving fields
- Tuning the Mott transition in a Bose-Einstein condensate by multi-photon absorption
- Chaos, entanglement and decoherence in the quantum kicked top
- Differences between mean-field dynamics and N-particle quantum dynamics as a signature of entanglement
- Number squeezing, quantum fluctuations and oscillations in mesoscopic Bose Josephson junctions
- Strong Violations of Bell-type Inequalities for Path-Entangled Number States
- Manipulation of ultracold atoms in dressed adiabatic radio frequency potentials
- Many-body quantum coherence and interaction blockade in Josephson-linked Bose-Einstein condensates
- Macroscopic Superpositions of Phase States with Bose-Einstein Condensates
- Exact Floquet states of a driven condensate and their stabilities
- Generation of mesoscopic superpositions of a binary Bose-Einstein condensate in a slightly asymmetric double well