Newton's cradle analogue with Bose-Einstein condensates
arXiv:1403.5257 · doi:10.1088/0953-4075/47/9/095303
Abstract
We propose a possible experimental realization of a quantum analogue of Newton's cradle using a configuration which starts from a Bose-Einstein condensate. The system consists of atoms with two internal states trapped in a one dimensional tube with a longitudinal optical lattice and maintained in a strong Tonks-Girardeau regime at maximal filling. In each site the wave function is a superposition of the two atomic states and a disturbance of the wave function propagates along the chain in analogy with the propagation of momentum in the classical Newton's cradle. The quantum travelling signal is generally deteriorated by dispersion, which is large for a uniform chain and is known to be zero for a suitably engineered chain, but the latter is hardly realizable in practice. Starting from these opposite situations we show how the coherent behaviour can be enhanced with minimal experimental effort.
arXiv commentTo appear in Journal of Physics B
References in corpus (17)
- Cold bosonic atoms in optical lattices
- Perfect state transfer in quantum spin networks
- Controlling Spin Exchange Interactions of Ultracold Atoms in Optical Lattices
- The cold atom Hubbard toolbox
- Controlled Collisions for Multiparticle Entanglement of Optically Trapped Atoms
- Perfect Transfer of Arbitrary States in Quantum Spin Networks
- Counterflow Superfluidity of Two-Species Ultracold Atoms in a Commensurate Optical Lattice
- Phase diagram of two-component bosons on an optical lattice
- A Review of Perfect State Transfer and its Application as a Constructive Tool
- Spin Chains as Perfect Quantum State Mirrors
- Collective modes, chaotic behavior and self-trapping in the dynamics of three coupled Bose-Einstein condensates
- 99%-fidelity ballistic quantum-state transfer through long uniform channels
- Long quantum channels for high-quality entanglement transfer
- Sign-Alternating Interaction Mediated by Strongly-Correlated Lattice Bosons
- Effective three-body interactions in triangular optical lattices
- Diagonalization of quasi-uniform tridiagonal matrices
- All Possible Coupling Schemes in XY Spin Chains for Perfect State Transfer