Associate Professor of Physics
MSc (Auckland), PhD (Victoria)
CV
Room 416
Phone +64 479 4121
email: ashton.bradley@otago.ac.nz
arXiv preprints | Google Scholar | Publons | Scopus | 
orcid.org/0000-0002-3027-3195
We are interested in collective quantum phenomena in cold gases and photonic systems comprising quantum fluids of atoms and light.
Fields of study include coherent quantum dynamics; quantum optics; quantum feedback; atomic, polariton, and photon fluids; open quantum systems; quantum information and quantum entanglement.
Research is at the intersection of coherent many-body quantum dynamics, and quantum dissipation effects that arise in applications.
Research interests
- Quantum turbulence and hydrodynamics
- Quantum optics and quantum entanglement
- Open quantum systems and dynamics of phase transitions
- First principles modelling of cold gas experiments
- Quantum and stochastic field theory
- Computational Physics
Projects at PhD, MSc and Hons level are available.
Quantum Turbulence
Quantum turbulent states of superfluid motion involve many interacting quantum vortices. Many open areas are under active investigation:
- Creation and characterization of energy cascades
- Vortex-sound interactions
- Collective dynamics of macroscopic vortex populations
- Amplification and control of turbulent flows
Open Quantum Systems
High-temperature Bose-Einstein condensates are well-described by stochastic projected Gross-Pitaevskii equations (SPGPE), the result of an open quantum systems analysis. During BEC growth the transfer of particles from the thermal cloud dominates dissipation. But what of the damping of excitations in an already formed condensate? Energy damping, a prediction of the SPGPE, has been implicated as the dominant damping mechanism in near equilibrium superfluid dissipation.
A range of interesting phenonmena are open for exploration:
- Energy dissipation anomalies in spinor systems
- Open systems theory for vortices and solitons
- Stability of persistent currents
- Sympathetic cooling
Quantum Optics
Under construction ...
Grants
- Dodd-Walls Centre of Research Excellence for Photonic and Quantum Technologies, $36.7m (Joint PI, 2022-2029)
- Marsden Grant, Hot entanglement with cold atoms, $935k (AI, 2019-2021)
- Marsden Grant, Making, Probing, and Understanding Two-Dimensionsal Quantum Turbulence, $905k (PI, 2018-2020)
- Dodd-Walls Centre of Research Excellence for Photonic and Quantum Technologies, $32.5m (Joint PI, 2018-2020)
- ARC Discovery Project: Riding the quantum wave: transport and flow of atomic quantum fluids, $228k (AI, 2016-2018)
- Rutherford Discovery Fellowship, $850k (PI, 2011-2016)
- Marsden Grant: Thermal dynamics of a spinor condensate, $940k (AI, 2013-2015)
- Royal Society of London International Exchanges grant: Excitations and Rotational Sensing in 2-species Bose-Einstein Condensates, $10k (AI, 2013)
- Marsden Fast Start, The Birth, Life, and Death of a Quantum Vortex Dipole, $300k (PI, 2011-2013)
- Royal Society of London International Exchanges grant: Superfluid Dynamics and Rotational Sensing in a Toroidally Trapped BEC, $10k (AI, 2011)
- NERF contract Quantum Technologies, $6.4m (Joint PI, 2008-2011)
- FRST IIOF Japan-NZ Collaborative Relationship Development Project JSPS contract: Magnetic phases and superfluidity in ultra-cold gases, $60k (Co PI, 2010-2012)
- NZ Foundation for Research, Science, and Technology Postdoctoral Fellowship $180k (PI 2008-2010).
Current Group
- Philipp Kommer (BSc Heidelberg)
- Luc Hackner (Hons)
- Nils Krause (PhD)
- Cassie Dong (MSc)
- Tommy Fischer (MSc)
- Tim Copland (ARF)
Postgraduate supervision
Nils Krause
Zain Mehdi
Cassie Dong
Tommy Fischer
Daniel Foshee
Eric Xu
Jordan Clarke
Michael Cawte
Peter Barnett
Mathew Denys
Fradom Atayee
Rob McDonald
Matt Reeves
Sam Rooney
Kyle Wright
Tom Blennerhassett
Malcolm Morrison
Clervie Pennarun
Florent Alzetto
Summer students
Anna Petersen
Cole Hickey
Cassie Dong
Daniel Tan
Tim Copland
Eric Xu
Briana Nally
Mathew Denys
Rob McDonald
Sam Rooney
Matt Reeves
Postdocs
Sukla Pal (Dodd-Walls Reseach Fellow, 2023-24)
Kishor Kumar (2019-2022)
Sukla Pal (2018-2021)
Xiaoquan Yu (2015-2019)
Thomas Billam (2013-2015)
Visiting Fellows
Murray Olsen, DWC and QSO fellow
Stuart Szigeti, ARC Endeavour Fellow
Chao-Fei Liu, CSC Research Fellow
Ying-Yan Li, CSC Research Fellow
Recent teaching:
2024
PHSI 341 Thermal and Condensed Matter Physics (Lecturer)
PHSI 365 Computational Physics (Lecturer, Coordinator)
PHSI 222 Electromagnetism (Lecturer, Coordinator)
2023
PHSI 365 Computational Physics (Lecturer, Coordinator)
PHSI 222 Electromagnetism (Lecturer, Coordinator)
2022
ELEC 441 Linear System and Noise
PHSI 365 Computational Physics (Lecturer, Coordinator)
PHSI 222 Electromagnetism (Lecturer, Coordinator)
2021
ELEC 441 Linear System and Noise
PHSI 365 Computational Physics (Lecturer, Coordinator)
PHSI 331 Quantum, Atomic and Particle Physics (Lecturer, Coordinator)
PHSI 222 Electromagnetism (Lecturer, Coordinator)
2020
ELEC 441 Linear Systems and Noise
PHSI 365 Computational Physics
Collaborations
Brian Anderson, Wyant College of Optical Sciences, University of Arizona
Xiaoquan Yu, Graduate School of China Academy of Engineering Physics
Matthew Davis, University of Queensland
Tyler Neely, University of Queensland
Matthew Reeves, University of Queensland
Stuart Szigeti, Australian National University
Maarten Hoogerland, University of Auckland
News
Packages I have written
QuantumFluidSpectra.jl
VortexDistributions.jl
PhaseSpaceTools.jl
Computing links
Aoraki
Thunderbirds
Julia Links
ANZSUP2019 Lectures
Julia
2019 SIAM Wilkinson Prize Lecture: Solving the two language problem in numerical computing
Want to do an MSc, PhD, or postdoc at the University Otago, New Zealand? Otago offers a generous PhD scholarship including stipend. Feel free to contact me at ashton.bradley [at] otago.ac.nz
I obtained my undergraduate degree at the University of Auckland, stimulating a deep interest in quantum mechanics and quantum optics. During my MSc I developed a non-Markovian model of an atom laser, advised by Joe Hope and Matthew Collett. I finished my PhD in 2005 on the theory of anomalous segregation and stochastic field theory of rotating Bose-Einstein condensation, advised by Crispin Gardiner.
In 2005 I took up a post-doctoral fellowship at the University of Queensland in the Center of Excellence for Quantum-Atom Optics, working with Matthew Davis, Murray Olsen and Margaret Reid on the theory of finite temperature superfluids and quantum entanglement.
In 2008 I moved to the University of Otago to take up a FRST Research Fellowship to work on quantum vortices and open quantum systems. In 2011 I was awarded an inaugural Rutherford Discovery Fellowship to study superfluid turbulence in two dimensional Bose-Einstein condensates.
¶ Selected Publications
Scaling dynamics of the ultra-cold Bose gas
Ashton S. Bradley, Jordan Clarke, Tyler W. Neely, Brian P Anderson,
Physical Review A 106, 053316 (2022), arXiv
Spectral analysis for compressible quantum fluids,
Ashton S. Bradley, R. Kishor Kumar, Sukla Pal, Xiaoquan Yu, Physical Review A, 106, 043322 (2022), arXiv
Giant vortex clusters in a two-dimensional quantum fluid,
Guillaume Gauthier, Matthew T. Reeves, Xiaoquan Yu, Ashton S. Bradley, Mark Baker, Thomas A. Bell, Halina Rubinsztein-Dunlop, Matthew J. Davis, Tyler W. Neely, Science 364, 12664 (2019) arXiv
Emergent Non-Eulerian Hydrodynamics of Quantum Vortices in Two Dimensions,
X. Yu, A. S. Bradley, Physical Review Letters 119, 185301 (2017) arXiv
Energy spectra of vortex distributions in two-dimensional quantum turbulence,
A. S. Bradley and B. P. Anderson, Physical Review X 2, 041001 (2012)
Spontaneous vortices in the formation of Bose-Einstein condensates,
C. N. Weiler, T. W. Neely, D. R. Scherer, A. S. Bradley, M. J. Davis, and B. P. Anderson, Nature 455, 948 (2008)
¶ Preprints
Feedback cooling Bose gases to quantum degeneracy
Matthew L. Goh, Zain Mehdi, Richard L. Taylor, Ryan J. Thomas, Ashton S. Bradley, Michael R. Hush, Joseph J. Hope, Stuart S. Szigeti, arXiv
Steady-state theory of electron drag on polariton condensates
S. Mukherjee, A. S. Bradley, D.W. Snoke, arXiv
¶ Refereed Articles
¶ 2023
75. Mutual friction and diffusion of two-dimensional quantum vortices
Zain Mehdi, Joseph J. Hope, Stuart S. Szigeti, Ashton S. Bradley,
Physical Review Research 5, 013184 (2023), arXiv
74. Vortex generation in stirred binary Bose-Einstein condensates
Anacé N. da Silva, R. Kishor Kumar, Ashton S. Bradley, Lauro Tomio, Physical Review A 107, 033314 (2023), arXiv
¶ 2022
73. Scaling dynamics of the ultra-cold Bose gas
Ashton S. Bradley, Jordan Clarke, Tyler W. Neely, Brian P Anderson,
Physical Review A 106, 053316 (2022), arXiv
72. Spectral analysis for compressible quantum fluids,
Ashton S. Bradley, R. Kishor Kumar, Sukla Pal, Xiaoquan Yu,
Physical Review A, 106, 043322 (2022), arXiv
71. Turbulent relaxation to equilibrium in a two-dimensional quantum vortex gas,
Matthew T. Reeves, Kwan Goddard-Lee, Guillaume Gauthier, Oliver R. Stockdale, Hayder Salman, Timothy Edmonds, Xiaoquan Yu, Ashton S. Bradley, Mark Baker, Halina Rubinsztein-Dunlop, Matthew J. Davis, Tyler W. Neely, Physical Review X 12, 011031 (2022) arXiv
¶ 2021
70. Superflow decay in a toroidal Bose gas: The effect of quantum and thermal fluctuations,
Zain Mehdi, Ashton S. Bradley, Joseph J. Hope, Stuart S. Szigeti, SciPost Physics, 11, 080 (2021), arXiv
69. Neutral vortex necklace in a trapped planar superfluid,
M. M. Cawte, M. T. Reeves, and A. S. Bradley, J. Low Temp. Phys. 202, 310–328 (2021), arXiv
68. Steady states, squeezing, and entanglement in intracavity triplet down conversion,
Mathew D. E. Denys, Murray K. Olsen, Luke S. Trainor, Harald G. L. Schwefel, and Ashton S. Bradley, Optics Communications 484, 126699 (2021), arXiv
¶ 2020
67. Dynamics of Hot Bose-Einstein Condensates: stochastic Ehrenfest relations for number and energy damping,
Rob G. McDonald, Peter S. Barnett, Fradom Atayee, Ashton S. Bradley, SciPost Phys. 8, 029 (2020), arXiv
¶ 2019
66. Coherent vortex dynamics in a strongly-interacting superfluid on a silicon chip,
Yauhen P. Sachkou, Christopher G. Baker, Glen I. Harris, Oliver R. Stockdale, Stefan Forstner, Matthew T. Reeves, Xin He, David L. McAuslan, Ashton S. Bradley, Matthew J. Davis, Warwick P. Bowen, Science 366,1480 (2019) arXiv
65. Giant vortex clusters in a two-dimensional quantum fluid,
Guillaume Gauthier, Matthew T. Reeves, Xiaoquan Yu, Ashton S. Bradley, Mark Baker, Thomas A. Bell, Halina Rubinsztein-Dunlop, Matthew J. Davis, Tyler W. Neely, Science 364, 12664 (2019) arXiv
64. Thermally-robust spin correlations between two atoms,
Pimonpan Sompet, Stuart S. Szigeti, Eyal Schwartz, Ashton S. Bradley, Mikkel F. Andersen, Nature Communications 10, 1889 (2019) arXiv
63. Snell's Law for a vortex dipole in a Bose-Einstein condensate,
Michael M. Cawte, Xiaoquan Yu, Brian P. Anderson, Ashton S. Bradley, SciPost Phys. 6, 032 (2019) (Editor's Selection) arXiv
¶ 2018
62. Mesoscopic dynamical differences from quantum state preparation in a Bose-Hubbard trimer,
M.K. Olsen, T.W. Neely, A.S. Bradley, Physical Review Letters 120, 230406 (2018) arXiv
¶ 2017
61. Enstrophy Cascade in Decaying Two-Dimensional Quantum Turbulence,
M. T. Reeves, T. P. Billam, X. Yu, A. S. Bradley,Physical Review Letters 119, 184502 (2017) arXiv
60. Emergent Non-Eulerian Hydrodynamics of Quantum Vortices in Two Dimensions,
X. Yu, A. S. Bradley, Physical Review Letters 119, 185301 (2017) arXiv
59. A quantum correlated twin atom laser from a Bose-Hubbard system,
M. K. Olsen, A. S. Bradley, Physical Review A 95, 063607 (2017) arXiv
¶ 2016
58. Theory of the vortex-clustering transition in a confined two-dimensional quantum fluid,
Xiaoquan Yu, Thomas P. Billam, Jun Nian, Matthew T. Reeves, Ashton S. Bradley, Physical Review A 94, 023602 (2016) arXiv
57. Brownian motion of a matter-wave bright soliton moving through a thermal cloud of distinct atoms,
R. G. McDonald and A. S. Bradley, Physical Review A 93 , 063604 (2016) arXiv
56. Reservoir interactions of a vortex in a trapped 3D Bose-Einstein condensate,
S. J. Rooney, A. J. Allen, U. Zülicke, N. P. Proukakis, A. S. Bradley,
Physical Review A 93, 063603 (2016) arXiv
¶ 2015
55. Low-Dimensional Stochastic Projected Gross-Pitaevskii Equation,
A. S. Bradley, S. J. Rooney, R. G. McDonald, Physical Review A 92, 033631 (2015),
arXiv
54. Reservoir interactions during Bose-Einstein condensation: modified critical scaling in the Kibble-Zurek mechanism of defect formation,
R. G. McDonald, A. S. Bradley, Physical Review A 92, 033616 (2015) arXiv (Editor's Suggestion)
53. Coherence and linewidth of a continuously pumped atom laser at finite temperature,
Geoffrey M. Lee, Simon A. Haine, Ashton S. Bradley, Matthew J. Davis, Physical Review A 92, 013605 (2015) arXiv
52. Quantum ultra-cold atomtronics,
M. K. Olsen and A. S. Bradley, Physical Review A 91, 043635 (2015) arXiv
51. Identifying a superfluid Reynolds number via dynamical similarity,
M. T. Reeves, T. P. Billam, B. P. Anderson, A. S. Bradley, Physical Review Letters 114, 155302 (2015) arXiv (Editor's Suggestion)
50. Oscillons in coupled Bose-Einstein condensates,
Shih-Wei Su, Shih-Chuan Gou, I-Kang Liu, Ashton S. Bradley, Oleksandr Fialko, Joachim Brand, Physical Review A 91, 023631 (2015)
49. Spectral energy transport in two-dimensional quantum vortex dynamics,
T. P. Billam, M. T. Reeves, A. S. Bradley, Physical Review A 91, 023615 (2015) (Editor's Suggestion)
¶ 2014
48. Stochastic Projected Gross-Pitaevskii equation for spinor and multi-component condensates,
Ashton S. Bradley and P. Blair Blakie, Physical Review A 90, 023631 (2014)
47. Signatures of Coherent Vortex Structures in a Disordered 2D Quantum Fluid,
Matthew T. Reeves, Thomas P. Billam, Brian P. Anderson, and Ashton S. Bradley, Physical Review A 89, 053631 (2014)
46. Dynamic and Energetic Stabilization of Persistent Currents in Bose-Einstein Condensates,
K.J.H. Law, T.W. Neely, P.G. Kevrekidis, B.P. Anderson, and A.S. Bradley, R. Carretero-Gonzalez, Physical Review A 89, 053606 (2014)
45. Onsager-Kraichnan Condensation in Decaying Two-Dimensional Quantum Turbulence,
Thomas P. Billam, Matthew T. Reeves, Brian P. Anderson, and Ashton S. Bradley, Physical Review Letters 112, 145301 (2014)
44. Numerical method for the stochastic projected Gross-Pitaevskii equation,
S. J. Rooney, P. B. Blakie, A. S. Bradley, Physical Review E 89, 013302 (2014)
¶ 2013
43. Persistent current formation in a high-temperature Bose-Einstein condensate:
an experimental test for classical field theory,
S. J. Rooney, T. W. Neely, B. P. Anderson, A. S. Bradley, Physical Review A 88, 063620 (2013)
42. Characteristics of Two-Dimensional Quantum Turbulence in a Compressible Superfluid,
T. W. Neely, A. S. Bradley, E. C. Samson, S. J. Rooney, E. M. Wright, K. J. H. Law, R. Carretero-González, P. G. Kevrekidis, M. J. Davis, B. P. Anderson, Physical Review Letters 111, 235301 (2013)
41. Kibble-Zurek scaling and its breakdown for spontaneous generation of Josephson vortices in Bose-Einstein condensates, Shih-Wei Su, Shih-Chuan Gou, Ashton Bradley, Oleksandr Fialko, Joachim Brand, Physical Review Letters 110, 215302 (2013)
40. Inverse Energy Cascade in Forced 2D Quantum Turbulence,
Matthew T. Reeves, Thomas P. Billam, Brian P. Anderson, Ashton S. Bradley,
Physical Review Letters 110, 104501 (2013)
¶ 2012
39. Stochastic projected Gross-Pitaevskii equation,
S. J. Rooney, P. B. Blakie, A. S. Bradley, Physical Review A 86, 053634 (2012)
38. Classical and quantum regimes of two-dimensional turbulence in trapped Bose-Einstein condensates,
M. T. Reeves, B. P. Anderson, A. S. Bradley, Physical Review A 86, 053621 (2012)
37. Energy spectra of vortex distributions in two-dimensional quantum turbulence,
A. S. Bradley and B. P. Anderson, Physical Review X 2, 041001 (2012)
36. Quantum tunneling of a vortex between two pinning potentials,
O. Fialko, A. S. Bradley, and J. Brand, Physical Review Letters 108, 015301 (2012)
¶ 2011
35. Suppression of Kelvon-induced decay of quantized vortices in oblate Bose-Einstein Condensates,
S. J. Rooney, P. B. Blakie, B. P. Anderson, and A. S. Bradley, Physical Review A 84, 023637 (2011)
¶ 2010
34. Analysis of a continuous-variable quadripartite cluster state from a single optical parametric oscillator,
S. L. W. Midgley, M. K. Olsen, A. S. Bradley, and O. Pfister, Physical Review A 82, 053826 (2010)
33. Geometric scale invariance as a route to macroscopic degeneracy: Loading a toroidal trap with a Bose or Fermi gas,
D. Baillie, P. B. Blakie, and A. S. Bradley, Physical Review A 82, 013626 (2010)
32. Quadripartite continuous-variable entanglement via quadruply concurrent downconversion,
S. L. W. Midgley, A. S. Bradley, O. Pfister and M. K. Olsen, Physical Review A 81, 063834 (2010)
31. Observation of vortex dipoles in an oblate Bose-Einstein condensate,
T. W. Neely, E. C. Samson, A. S. Bradley, M. J. Davis, and B. P. Anderson, Physical Review Letters 104, 160401 (2010)
30. Decay of a quantum vortex: Test of nonequilibrium theories for warm Bose-Einstein condensates,
S. J. Rooney, A. S. Bradley, and P. B. Blakie, Physical Review A 81, 023630 (2010)
29. Nonequilibrium dynamics of vortex arrest in a finite-temperature Bose-Einstein condensate,
T. M. Wright, A. S. Bradley, and R. J. Ballagh, Physical Review A 81, 013610 (2010)
¶ 2009
28. Finite-temperature dynamics of a single vortex in a Bose-Einstein condensate: Equilibrium precession and rotational symmetry breaking,
T. M. Wright, A. S. Bradley, and R. J. Ballagh, Physical Review A 80, 053624 (2009)
27. Numerical representation of quantum states in the positive-P and Wigner representations,
M. K. Olsen, A. S. Bradley, Optics Communications 282, 3924 (2009)
26. Numerical method for evolving the dipolar projected Gross-Pitaevskii equation,
P. B. Blakie, C. Ticknor, A. S. Bradley, A. M. Martin, M. J. Davis, and Y. Kawaguchi, Physical Review E 80, 016703 (2009)
25. Scale-invariant thermodynamics of a toroidally trapped Bose gas,
A. S. Bradley, Physical Review A 79, 033624 (2009)
¶ 2008
24. Dynamical thermalization and vortex formation in stirred two-dimensional Bose-Einstein condensates,
T. M. Wright, R. J. Ballagh, A. S. Bradley, P. B. Blakie, C. W. Gardiner, Physical Review A 79, 033624 (2008)
23. Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques,
P. B. Blakie, A. S. Bradley, M. J. Davis, R. J. Ballagh, and C. W. Gardiner, Advances in Phyiscs 57, 363 (2008)
21. Spontaneous vortices in the formation of Bose-Einstein condensates,
C. N. Weiler, T. W. Neely, D. R. Scherer, A. S. Bradley, M. J. Davis, and B. P. Anderson, Nature 455, 948 (2008)
21. From squeezed atom lasers to teleportation of massive particles,
M. K. Olsen, S. A. Haine, A. S. Bradley, and J. J. Hope, European Physics Journal Special Topics 160, 331 (2008)
20. Bose-Einstein condensation from a rotating thermal cloud: Vortex nucleation and lattice formation,
A. S. Bradley, C. W. Gardiner, and M. J. Davis, Physical Review A 77, 033616 (2008)
19. Bright bichromatic entanglement and quantum dynamics of sum frequency generation,
M. K. Olsen, A. S. Bradley, Physical Review A 77, 023813 (2008)
¶ 2007
18. Quantum statistical measurements of an atom laser beam,
M. K. Olsen, A. S. Bradley, S. A. Haine, J. J. Hope, Nuclear Physics A 790 733 (2007)
17. Continuous variable tripartite entanglement and Einstein-Podolsky-Rosen correlations from triple nonlinearities,
M. K. Olsen, A. S. Bradley, M. D. Reid, Optics and Spectroscopy 103, 195 (2007)
16. Tripartite entanglement and threshold properties of coupled intracavity down-conversion and sum-frequency generation,
C. Pennarun, A. S. Bradley, and M. K. Olsen, Physical Review A 76, 063812 (2007)
15. Raman scheme to measure the quantum statistics of an atom laser beam,
A. S. Bradley, M. K. Olsen, S. A. Haine, and J. J. Hope, Physical Review A 76, 033603 (2007)
14. Quantum de Laval nozzle: Stability and quantum dynamics of sonic horizons in a toroidally trapped Bose gas containing a superflow,
P. Jain, A. S. Bradley, and C. W. Gardiner, Physical Review A 76, 023617 (2007)
13. Quantum depletion of collapsing Bose-Einstein condensates,
S. Wuester, B. J. Dabrowska-Wuester, A. S. Bradley, M. J. Davis, P. B. Blakie, J. J. Hope, and C. M. Savage,
Physical Review A 75, 043611 (2007)
¶ 2006
12. Asymmetric polychromatic tripartite entanglement from interlinked parametric interactions,
M. K. Olsen, A. S. Bradley, Physical Review A 74, 063809 (2006)
11. Three-body recombination of ultracold Bose gases using the truncated Wigner method,
A. A. Norrie, R. J. Ballagh, C. W. Gardiner, A. S. Bradley, Physical Review A 73, 043618 (2006)
10. Continuous variable tripartite entanglement and Einstein-Podolsky-Rosen correlations from triple nonlinearities,
M. K. Olsen, A. S. Bradley, and M. D. Reid, Journal of Physics B 39, 2515 (2006)
9. Continuous variable tripartite entanglement from twin nonlinearities,
M. K. Olsen, A. S. Bradley, Journal of Physics B 39, 127 (2006)
¶ 2005
8. Bright tripartite entanglement in triply concurrent parametric oscillation,
A. S. Bradley, M. K. Olsen, O. Pfister, R. C. Pooser, Physical Review A 72, 053805 (2005)
7. Phase-space analysis of bosonic spontaneous emission,
M. K. Olsen, L. I. Plimak, S. Rebic, A. S. Bradley, Optics Communications 254, 271 (2005)
6. Properties of the stochastic Gross-Pitaevskii equation: Projected Ehrenfest relations and the optimal plane wave basis,
A. S. Bradley, P. B. Blakie, and C. W. Gardiner, Journal of Physics B 38, 4259 (2005)
¶ 2004
5. Fock-state dynamics in Raman photoassociation of Bose-Einstein condensates,
M. K. Olsen, A. S. Bradley, and S. B. Cavalcanti, Physical Review A 70, 033611 (2004)
¶ 2003
4. Steady state quantum statistics of a non-markovian atom laser. II,
A. S. Bradley, J. J. Hope, M. J. Collett, Physical Review A 68, 063611 (2003)
¶ 2002
3. Theory of Ramsey spectroscopy and anomalous segregation in ultracold rubidium,
A. S. Bradley & C.W. Gardiner, Journal of Physics B 35, 4299 (2002)
¶ 2001
2. Analysis of g2 for the cold collision frequency shift in the hydrogen condensate experiments,
C. W. Gardiner and A. S. Bradley, Journal of Physics B 34, 4663 (2001)
1. Theory of the cold collision frequency shift in 1S-2S spectroscopy of Bose-Einstein-condensed and non-condensed hydrogen,
C. W. Gardiner and A. S. Bradley, Journal of Physics B 34, 4637 (2001)