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Demonstration of strong coupling between an atom and a monolithic microresonator
Strong coupling has been demonstrated between a single atom and a single photon in a monolithic optical microresonator, for the first time. This work done in collaboration with researchers at the California Institute of Technology and the University of Auckland appears in Nature. The system is silicon chip based and can be fibre coupled with extremely high efficiency, and should provide an enabling step for complex experiments in the fields of cavity quantum electrodynamics and quantum information science.
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Continuous variable purification of non-classical states
Dr. Warwick Bowen, along with colleagues at Universitat Erlangen-Nurnberg in Germany, has performed the first demonstration of non-classical state
purification in the continuous variable regime. These results have been recently published in Physical Review Letters.
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Thermal Vortex-Pair Creation in 2D Bose-Einstein Condensates
Drs Tapio Simula and Blair Blakie have used classical field techniques to explore the superfluid phase
diagram of a trapped 2D Bose gas. These theoretical results are in good agreement with recent experiments by the ENS group of Jean Dalibard.
This work appears in Physical Review Letters and additional results and movies from this work are
available here.
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Proposal for multi-wavelength entanglement
The proposal of a new technique to generate multi-wavelength entanglement by Dr. Warwick Bowen in collaboration with the group of Dr. Ping Koy Lam at the Australian National University has been featured on the cover of Physical Review Letters.
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Critical temperature of a trapped Bose gas: comparison of theory and experiment
Dr Matthew Davis of the University of Queensland and Dr Blair Blakie of the Otago UCA group
report the results of a detailed theoretical study of the shift in critical temperature
of a harmonically confined Bose gas. The results of this study find excellent agreement with the experimental results of Gerbier
et al. [Phys. Rev. Lett. 92, 030405 (2004)] and quantifies the likelihood of observing critical fluctuations in experiments.
This work represents the first quantitative comparison of a classical field method with experiment and
appears in Physical Review Letters
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Transition from BEC to Berezinskii-Kosterlitz-Thouless phase
Work done by Drs Tapio Simula and David Hutchinson, in collaboration with Dr Mark Lee from Oxford University,
has quantified the phase diagram for a 2D trapped Bose gas (to appear in Philosophical Magazine Letters). A preprint of this work is available
here.
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Fermion cooling with Optical Lattices
UCA theorists Dr Blair Blakie and Ms Alice Bezzet have studied the loading of finite temperature Fermions
into an optical lattice, and have shown that under appropriate conditions the temperature of the system reduces exponentially with lattice depth.
The results of this study are published in
Physical Review A.
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Sound Propagation in Rotating BECs
Work done by UCA theorists in collaboration with the experimental
group of Nobel Prize winner Prof. Eric Cornell has examined sound propagation in rapidly rotating BECs.
The results of this study are published in
Physical Review Letters.
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Quantum Turbulence in Colliding BECs
Pioneering application of stochastic techniques to the collision of BECs reveals the phenomenon of quantum turbulence in the dynamics of
the scattered atoms, and has been featured on the cover of
Physical Review Letters.
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World's First Ultra-Cold atom Collider
Work by the BEC experimental group on
"Imaging of s and d
Partial-Wave Interference in Quantum Scattering of Identical Bosonic Atoms"
has been featured on the cover of Physical Review Letters.
An introductory overview of the Ultra-cold atom collider experiments is given here
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Classical Field Method for Trapped BECs
Dr Blair Blakie in collaboration with Dr Matthew Davis at the University of Queensland have developed a practical formalism
for simulating ultra cold Bose gases in harmonic traps using the classical field technique. This work appears in
Physical Review A.
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UCA Scientist First to Teleport Atoms
Dr Murray Barrett's work with Dave Wineland's
NIST group appears in an article published in
Nature.
In these experiments Dr Barrett provided the first demonstration of atom teleportation.
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Novel Scheme for Manipulating BECs in Optical Lattices
Work by the BEC experimental group published in
Physical Review A, shows how to rapidly transfer a BEC in an optical lattice into
a Bloch state near the band edge.
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