Quantum Information Approach to Rotating Bose-Einstein Condensate

Details Quantum Information Approach to Rotating Bose-Einstein Condensate Quantum Information Approach to Rotating Bose-Einstein Condensate

2009-08-24

arxiv.org/abs/0908.3356v3

Phys. Rev. A, 80, 063606 (2009)

Physics

Condensed Matter

Quantum Gases

4 pages, 6 figures, minimal changes are made

Scientific paper

10.1103/PhysRevA.80.063606

We investigate the 2D weakly interacting Bose-Einstein condensate in a rotating trap by the tools of quantum information theory. The critical exponents of the ground state fidelity susceptibility and the correlation length of the system are obtained for the quantum phase transition when the frst vortex is formed. We also find the single-particle entanglement can be an indicator of the angular momentums for some real ground states. The single-particle entanglement of fractional quantum Hall states such as Laughlin state and Pfaffian state is also studied.

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