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Superfluidity and metrology with ring shaped Bose-Einstein condensates (2009–2011)

Abstract:
Bose-Einstein condensates (BECs) are diaphanous clouds of millions of indistinguishable atoms synchronized in a fuzzy droplet of quantum superfluid. It has long been known that superfluid helium can flow without resistance below a critical speed, yet the best theories still vastly overestimate its value in doughnut shaped containers. In a joint experimental and theoretical program we will elucidate the mechanism that limits the superfluid velocity in ring-shaped systems. BECs also promise to be ultra-sensitive measuring devices. We will perform the first experiment demonstrating a new measurement scheme that offers drastically improved scaling of the precision with particle number compared to previously known methods.
Grant type:
ARC Discovery Projects
Researchers:

  • Professor Gerard Milburn

    Professorial Research Fellow
    School of Mathematics and Physics
    Faculty of Science
    Professorial Research Fellow
    School of Mathematics and Physics
    Faculty of Science
    Affiliate of ARC COE for Engineered
    ARC Centre of Excellence for Engineered Quantum Systems
    Faculty of Science
Funded by:
Australian Research Council