Quantum Fluids of Atoms and Light

Ashton Bradley Group

We study the theory of quantum fluids: many-body systems where waves, particles, vortices, dissipation, and entanglement meet.

Based in the Physics Department at the University of Otago, our group develops theoretical and computational methods for ultracold atoms, quantum fluids of light, and open quantum systems. We work closely with experiment, using quantum field theory, quantum optics, and numerical modelling to understand how collective quantum behaviour emerges, evolves, and breaks down.

Our current research spans quantum turbulence, finite-temperature superfluid dynamics, dissipative quantum systems, and light–matter platforms for exploring many-body physics.

We are part of the wider Atomic, Molecular, and Optical Quantum Theory group at Otago.

Opportunities: We welcome enquiries from motivated PhD, Master’s, and Honours students interested in quantum fluids, ultracold atoms, quantum optics, and computational many-body physics. See current openings.

News

  • February 06, 2026
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    Evaporative damping, SPGPE complete!
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  • December 13, 2025
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    Myrann thesis defence, des solitons à profusion!
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  • November 07, 2025
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    2026 QICS Visiting Professor Fellowship at LKB Paris
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  • August 28, 2025
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    Congratulations Nils, two papers accepted!
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  • July 12, 2025
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    Compressible Turbulence - From Cold Atoms to Neutron Star Mergers
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  • April 18, 2025
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    Observation of Jones-Roberts solitons in a paraxial quantum fluid of light
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