Modelling Condensed Matter Systems with Quantum Gases in Optical Cavities
Lead Research Organisation:
University of Strathclyde
Department Name: Physics
Abstract
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Organisations
People |
ORCID iD |
| Gordon Robb (Principal Investigator) |
Publications
Cubero D
(2018)
Avoided Crossing and sub-Fourier-sensitivity in Driven Quantum Systems.
in Physical review letters
Diver M
(2015)
Chaotic resonances of a Bose-Einstein condensate in a cavity pumped by a modulated optical field
in Physical Review A
Diver M
(2014)
Nonlinear and chaotic dynamics of a Bose-Einstein condensate in an optical cavity
in Physical Review A
Grießer T
(2010)
A Vlasov approach to bunching and selfordering of particles in optical resonators
in The European Physical Journal D
Hemmerling M
(2010)
Slowing atoms using optical cavities pumped by phase-modulated light
in Physical Review A
Hemmerling M
(2011)
Cavity cooling using intense blue-detuned light
in Journal of Modern Optics
Labeyrie G
(2014)
Optomechanical self-structuring in a cold atomic gas
in Nature Photonics
Robb GR
(2015)
Quantum threshold for optomechanical self-structuring in a Bose-Einstein condensate.
in Physical review letters
Tesio E
(2014)
Kinetic theory for transverse optomechanical instabilities.
in Physical review letters
| Description | The importance of nonlinear/chaotic dynamics in BEC-cavity interactions was identified. Experiments have demonstrated regimes where e.g. light emission from the cavity varies randomly. This randomness was originally assumed to arise from e.g. detector noise. We have demonstrated that this apparent randomness is a feature of the interaction between light and BECs, and is an example of nonlinear , chaotic behaviour, which appears predictable for small times, but unpredictable for long times. Rondomness due to e.g. detectors is not necessary. We discovered that interaction of a cold atomic gas or ultracold Bose-Einstein Condensate (BEC) with many transverse modes of an optical field can give rise to self-structuring of the optical intensity and atomic density, leading to complex spatial patterns e.g. hexagons honeycombs etc. We developed the theory of this self-structuring instability for both cold atoms and BEC and demonstrated good agreement with experiments. |
| Exploitation Route | Our findings offer new insight into the behaviour of cold matter when it interacts with light, and opens up new possibilities for the simultaneous control of cold matter and light via nonlinear dynamics which will be of benefit to other researchers in cold atoms, degenerate matter, quantum optics and nonlinear physics. |
| Sectors | Education,Other |
| Description | Our findings have formed part of the basis for an EU H2020 European Training Network (ETN) on 'Collective effects and optomechanics in ultra-cold matter (ColOpt)' (started 1/1/2017) - a strongly intersectorial network comprising nine academic partners and three companies from six European countries, which are augmented by two partners in Brazil and the USA, four further non-academic partners and one public-private partnership. |
| First Year Of Impact | 2015 |
| Sector | Education |
| Impact Types | Economic |
| Description | University press release on cool, complex patterns |
| Form Of Engagement Activity | Engagement focused website, blog or social media channel |
| Part Of Official Scheme? | No |
| Geographic Reach | International |
| Primary Audience | Public/other audiences |
| Results and Impact | University press release to accompany publication of Nature Photonics article "Optomechanical self-structuring in a cold atomic gas" |
| Year(s) Of Engagement Activity | 2014 |
| URL | https://www.strath.ac.uk/research/subjects/physics/atomsandlightformcoolcomplexpatterns/ |