Optical lattice with torus topology

Published

September 26, 2018

Author(s)

Hwanmun Kim, Guanyu Zhu, James V. Porto, Mohammad Hafezi

Abstract

We propose an experimental scheme to construct an optical lattice where the atoms are confined to the surface of a torus. This construction can be realized with spatially shaped laser beams which could be realized with recently developed high resolution imaging techniques. We numerically study the feasibility of this proposal by calculating the tunneling strengths for atoms in the torus lattice. To illustrate the non-trivial role of topology in atomic dynamics on the torus, we study the quantized superfluid currents and fractional quantum Hall (FQH) states on such a structure. For FQH states, we numerically investigate the robustness of the topological degeneracy. Our scheme for torus construction can be generalized to Riemann surfaces with higher genus for exploration of richer topological physics.

Citation

Physical Review A (Atomic, Molecular and Optical Physics)

Pub Type

Journals

Keywords

optical lattices, torus

Citation

Kim, H. , Zhu, G. , Porto, J. and Hafezi, M. (2018), Optical lattice with torus topology, Physical Review A (Atomic, Molecular and Optical Physics) (Accessed January 10, 2026)