Research
Simon A Gardiner

I have had a variety of research interests. These include:

  • working on one of the earliest theoretical proposals for experimentally realizing a quantum logic gate, involving cavity quantum-electrodynamics
  • the theoretical investigation of the problems of quantum state synthesis, quantum measurement, and quantum chaotic dynamics, along with ideas for their experimental implementation in a single trapped ion configuration;
  • theoretical investigation on the nonlinear and possibly chaotic dynamics of atomic Bose-Einstein condensates subjected to a chaos-inducing external potential, particularly driven Bose-Einstein condensates;
  • theoretical investigation of the possibility of optical-cavity-mediated dissipative dynamics of atomic Bose-Einstein condensates;
  • theoretical determination of the properties of mixtures of ultra-cold bosonic and fermionic atomic gases;
  • the theoretical interpretation of quantum chaotic dynamics observed in an atom-optical system in analyzing the novel phenomenon of quantum accelerator modes.

Recently, my major research interests have been the properties and dynamics of ultracold, quantum-degenerate atomic gases, particularly atomic Bose-Einstein condensates, and quantum chaotic dynamics, as observed in atomic-optical systems. Combining these, one can also consider the possibility of observing quantum-chaotic dynamics when a Bose-Einstein condensate is taken as the initial condition of the atomic ensemble.

I am presently particularly interested in the effect on and growth of dynamical instabilities and excitations of Bose- Einstein condensates, when initially Bose condensed systems are manipulated and strongly perturbed by applied external fields. This involves putting the condensate into a dynamical, non-equilibrium situation, where excitations and dynamical instabilities must be considered. I am interested in trying to develop useful methodologies to understand the issues involved in such comparatively dramatic dynamical experimental situations, and applying them to real experimental examples.

I have a long-term interest in atom-optical quantum chaos and quantum accelerator modes. For more details, including a brief tutorial on how quantum accelerator modes manifest themselves in an atom-optical configuration, click here.

I am also part of the Durham theoretical research effort on quantum fluids, studying solitons and vortices in atomic Bose-Einstein condensates (BECs). For more details on our work, click here.

Content © Simon A Gardiner, Durham University 2005