Title: Thoughts on rotational response of BEC in quasi-1D toroidal trap and its possible rotation-sensing application.

Speaker:  Michal Kolar, Department of Optics, Palacky University, Czech Republic

Time: Friday 15 September, 13:15-14:00

Place:  1520-732

Abstract:

We discuss the possibility of using the particle-interaction induced nonlinearity to enhance the rotation sensitivity of a single-species BEC in a toroidal trap. We modify the quasi-1D toroidal trap by a weak circular lattice potential that couples modes with opposite orbital angular momenta. The information on rotation is in the populations of the counter-rotating modes. The possible advantage of this setup is small ring size and relatively short operation timescale. Disadvantage lies in the increased sensitivity to total particle number fluctuations.

We describe the system in the mean-field approximation as well as in the two-mode discrete model (second quantization).

Jan Arlt and Klaus Mølmer