Tuesday, April 23, 2013

1304.5716 (Shunsuke Furukawa et al.)

Integer Quantum Hall State in Two-Component Bose Gases in a Synthetic
Magnetic Field

Shunsuke Furukawa, Masahito Ueda
We study two-component (or pseudospin-1/2) Bose gases in a strong synthetic magnetic field. Using exact diagonalization, we show that a bosonic analogue of an integer quantum Hall state (without intrinsic topological order) appears at the total filling factor \nu=1+1 when the strengths of intracomponent and intercomponent interactions are comparable with each other. This provides a prime example of a symmetry-protected topological phase in a controlled setting of quantum gases. The real-space entanglement spectrum of this state is found to be comprised of counter-propagating chiral modes consistent with the predicted edge theory.
View original: http://arxiv.org/abs/1304.5716

No comments:

Post a Comment