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Quantum Atom Optics
The new interdisciplinary field of quantum-atom optics (QAO) has formed
at the intersection of atomic, molecular and optical physics, condensed
matter physics, and computational physics. The field is driven by
an unprecedented level of experimental control of degenerate Bose
and Fermi systems that have a well-defined theoretical basis in quantum
many-body theory. This leads to tests of theory that were previously
unavailable, and thus the development of fundamental knowledge.
In the theory core of the ARC Centre of Excellence for Quantum-Atom
Optics (ACQAO) we pursue cutting-edge developments in quantum many-body
physics that lead to our growing understanding of QAO systems. We
approach these systems from a microscopic perspective, focusing on
how to generate, manipulate and measure many-body correlations.
Our motivating scientific questions are:
- How are the many-body states of QAO systems best characterised, and
how is the formation of these states to be understood as a non-equilibrium,
dynamical process?
- What kinds of entanglement and many-body correlations can be generated
in QAO systems, and in what ways can they be efficiently detected?
- How do QAO systems test fundamental predictions of quantum mechanics
and many-body theory?
- What new theoretical and computational methods must be developed to
provide quantitative answers to these questions?
We provide ideas, simulations and advanced quantitative models for
leading experimental groups in Australia and worldwide. As an outcome
of ACQAO experimental and theoretical work, we expect practical tools
that utilize many-body quantum behaviour of QAO systems, e.g. continuously
pumped atom laser, sources of entangled atoms, and matter-wave interferometers
for precision measurements.
Our research program is structured around five themes:
1) Atom lasers and formation of quantum degenerate gases
2) Coherent manipulations of matter waves
3) Quantum statistics and pairing correlations in ultracold Bose
and Fermi systems
4) Macroscopic correlations, entanglement and fundamental tests
5) Computational physics and theoretical methods for Bose and Fermi
systems
Recent project reports
2008
- Quantum dynamics of ultracold atoms in double wells
T. J. Haigh, J. Billard, A. J. Ferris, M. J. Davis, M. K. Olsen and J. F. Corney
- Formation of topological defects in Bose-condensed gases
M. J. Davis, J. Sabbatini, G. M. Lee, A. S. Bradley
- Superfluidity and thermodynamics of low-dimensional Bose gases
M. J. Davis, A. G. Sykes, C. J. Foster, K. V. Kheruntsyan, R. N. Bisset, P. B. Blakie,
T. Simula and D. C. Roberts
- C-field simulations of thermal Bose-Einstein condensates
M. J. Davis, G. M. Lee, M. C. Garrett, C. Feng, S. A. Haine, A. S. Bradley, P. B. Blakie
- Quantum noise and entanglement in Bose-Einstein condensates
M. J. Davis, M. K. Olsen, A. J. Ferris, E. G. Cavalcanti, A. S. Bradley, S. Wuster,
B. J. Dabrowska-Wuster
- Quantum squeezing with optical fibres: simulations and experiment
J. F. Corney, P. D. Drummond, R. Dong, J. Heersink, U. L. Andersen and G. Leuchs
- Atom-atom correlations in colliding Bose-Einstein condensates
M. Ogren, C. M. Savage, A. Perrin, D. Boiron, V. Krachmalnicoff, C. I. Westbrook,
P. Deuar, and K. V. Kheruntsyan
- Quantum-atom optics using dissociation of molecular condensates
M. Ogren, S. Midgley, M. J. Davis, M. K. Olsen, J. F. Corney,
C. M. Savage, and K. V. Kheruntsyan
- Thermodynamics and nonlocal pair correlations in 1D Bose gases
A. G. Sykes, D. M. Gangardt, P. Deuar, M. J. Davis, P. D. Drummond, K. Viering,
M. G. Raizen, A. H. van Amerongen, N. J. van Druten, and K. V. Kheruntsyan
- Quantum state transfer in a Raman atom laser system
A. S. Bradley, M. K. Olsen, S. A. Haine and J. J. Hope
- Generating squeezing in an atom laser through self interaction
M. T. Johnsson and S. A. Haine
- Characterising the linewidth of an atom laser
M. T. Johnsson, S. A. Haine, J. J. Hope, N. P. Robins, C. Figl, M. Jeppesen, J. Dugu´e and J. Close
- Quantum effects and entanglement in Bose-Einstein condensates
M. J. Davis, A. S. Bradley, M. K. Olsen, A. J. Ferris, S. Wuster and B. J. Da¸browska-Wuster
2007
- 3D Bose‑Einstein condensates from first principles
Timothy G. Vaughan, Piotr Deuar, Joel F. Corney, and Peter D. Drummond
- One‑dimensional bose gases
K. V. Kheruntsyan, H. Hu, A. Sykes, M. J. Davis, and P. D. Drummond
- Quantum simulations of Bose‑Einstein condensates
M. J. Davis, A. S. Bradley, M. K. Olsen, A. J. Ferris, P. B. Blakie, J. J. Hope, C. M. Savage, S. W¨uster, E. A. Ostrovskaya, B. J. Da¸browska, and D. C. Roberts
- Classical field simulations of thermal Bose‑Einstein condensates
M. J. Davis, A. S. Bradley, C. J. Foster, F. Alzetto, P. B. Blakie, T. Simula, C. W. Gardiner
- Quantum dynamics of polarisation squeezing in optical fibres
J. F. Corney, P. D. Drummond, J. Heersink, V. Josse, G. Leuchs and U. L. Andersen
- Quantum information
M. K. Olsen, A. S. Bradley, and M. D. Reid
- Macroscopic superpositions, entanglement and the EPR Paradox
M. D. Reid, E. Cavalcanti P. D. Drummond, W. P. Bowen P. K. Lam, H. A. Bachor, U. L. Andersen and G. Leuchs
- Universal thermodynamics of strongly interacting Fermi gases
Hui Hu, Xia-Ji Liu and P. D. Drummond
- Quantum atom optics using dissociation of a molecular BEC
C. M. Savage, M. J. Davis, S. J. Thwaite, P. E. Schwenn, M. K. Olsen, and K. V. Kheruntsyan
- Localisation vs heating of Bose‑Einstein condensates in optical lattices
B. J. Da¸browska-W¨uster, S. W¨uster, A. Bradley, M. Davis, and E.A. Ostrovskaya
- Quantum dynamics of a coupled atomic‑molecular gas in an optical lattice
M. K. Olsen, S. J. Thwaite, M. J. Davis, and K. V. Kheruntsyan
- Spin‑polarized superfluid Fermi gases
Xia-Ji Liu, Hui Hu and P. D. Drummond
- Phase‑space simulation methods for quantum dynamics
S. Hoffmann, M. R. Dowling, P. Deuar, A. S. Bradley, J. F. Corney, M. K. Olsen, M. J. Davis, and P. D. Drummond
- Phase‑space representations for solving quantum many‑body problems
D. W. Barry , K. K. Rajagopal, J. F. Corney, P. D. Drummond, S. Ghanbari and T. Kieu
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