机构:
UCL, London Ctr Nanotechnol, London WC1H 0AH, England
UCL, Dept Phys & Astron, London WC1E 6BT, EnglandUniv Cambridge, Cavendish Lab, Cambridge CB3 0HE, England
机构:
Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
Univ Hong Kong, Hong Kong Inst Quantum Sci & Technol, Hong Kong, Peoples R ChinaUniv Trento, Pitaevskii BEC Ctr, CNR INO, I-38123 Trento, Italy