Creation of macroscopic superpositions of flow states with Bose-Einstein condensates

Abstract

We present a straightforward scheme for creating macroscopic superpositions of different superfluid flow states of Bose-Einstein condensates trapped in optical lattices. This scheme has the great advantage that all the techniques required are achievable with current experiments. Furthermore, the relative difficulty of creating cats scales favorably with the size of the cat. This means that this scheme may be well-suited to creating superpositions involving large numbers of particles. Such states may have interesting technological applications such as making quantum-limited measurements of angular momentum.

9 pages, 7 figures

References in corpus (1)

• Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms

Cited by in corpus (5)

• Some remarks on the coherent-state variational approach to nonlinear boson models
• Generation of macroscopic superposition states in ring superlattices
• Dark dynamic acousto-optic ring lattices for ultracold atoms
• Bose-Hubbard model in a ring-shaped optical lattice with high filling factors
• Macroscopic superposition states in rotating ring lattices