From Rotating Atomic Rings to Quantum Hall States

Details From Rotating Atomic Rings to Quantum Hall States From Rotating Atomic Rings to Quantum Hall States

2011-01-28

arxiv.org/abs/1101.5593v1

Scientific Reports 1, 43 (2011)

Physics

Condensed Matter

Quantum Gases

9 pages, 5 figures

Scientific paper

10.1038/srep00043

Considerable efforts are currently devoted to the preparation of ultracold neutral atoms in the emblematic strongly correlated quantum Hall regime. The routes followed so far essentially rely on thermodynamics, i.e. imposing the proper Hamiltonian and cooling the system towards its ground state. In rapidly rotating 2D harmonic traps the role of the transverse magnetic field is played by the angular velocity. For particle numbers significantly larger than unity, the required angular momentum is very large and it can be obtained only for spinning frequencies extremely near to the deconfinement limit; consequently, the required control on experimental parameters turns out to be far too stringent. Here we propose to follow instead a dynamic path starting from the gas confined in a rotating ring. The large moment of inertia of the fluid facilitates the access to states with a large angular momentum, corresponding to a giant vortex. The initial ring-shaped trapping potential is then adiabatically transformed into a harmonic confinement, which brings the interacting atomic gas in the desired quantum Hall regime. We provide clear numerical evidence that for a relatively broad range of initial angular frequencies, the giant vortex state is adiabatically connected to the bosonic $\nu=1/2$ Laughlin state, and we discuss the scaling to many particles.

Affiliated with

Also associated with

No associations

Rating

From Rotating Atomic Rings to Quantum Hall States does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with From Rotating Atomic Rings to Quantum Hall States, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and From Rotating Atomic Rings to Quantum Hall States will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-552702