Theory and Advanced Computation Group

1
Theory and Advanced Computation Group
School of Electronics and Physical Sciences,
University of Surrey, Guildford, GU2 7XH
Overview At the beginning of the 21st century
research and technology has embarked on a journey
to the THz-world and into nano-space. Examples
are the conception of quantum dot nano-materials,
carbon-nanotubes or functional photonic crystals,
the controlled manipulation of single biological
molecules or harnessing of the quantum nature of
electrons and photons on ultrafast
timescales. The Theory and Advanced Computation
(TAC) group focuses on the theory and
super-computer simulation of the fundamentals and
applications of materials, devices and systems in
ultra-fast photonics, nano-electronics and the
biomedical sciences. The research explores the
complex quantum worlds of ultra-fast photonics,
nano-electronic and photonic materials as well as
nano-thermodynamics and bio-photonics by means of
theory and advanced computer simulation
techniques.

• The Nano-Modelling Supercomputing Lab
• The TAC group uses and maintains the ATI
  Nano-Modelling Supercomputing Lab hosting the
• NEC SX-6/4BVector Supercomputer
• and a
• 148 Processor High-Bandwidth AMD Opteron
  cluster.
• TAC industrial links
• Infineon, Merck, NEC, NL Nano-Semiconductor,
  Siemens, U2T, and others
• TAC Head
• Professor Ortwin Hess

• The theoretical and computational research goes
  hand-in-hand with strong efforts in the science
  of high-performance computing itself. Strong
  collaboration within the ATI, as well as with
  academic partners and companies in the UK,
  Germany, Finland, Spain and Denmark integrate the
  computer simulations with experimental and
  nano-technological efforts and link them with
  innovative market applications.
• http//www.ati.surrey.ac.uk/tac
• Funding
• 500k SRIF-2 fund for supercomputing-
  infrastrucrue.
• 1M research grants (BMBF, EU, EPSRC) in 2003
  and 2004
• 300k new funding in 2005.

The ATI Nano-Modellling Supercomputing Lab
Ultrafast Laser Dynamics
Whispering Gallery Modes of a Microcavity Laser
Photonic Materials
Population Dynamics in a Microcavity Laser
Optically Pumped Semiconductor Disc Laser
Snapshot of the Optical Field
Photonic Band Structure
Ultrafast Gain and Index Dynamics of a
Femtosecond Light Pulse in a Quantum Dot Optical
Amplifier
Optical Modes in a Photonic Crystal Slab
A Double-Inverse Opal Photonic Crystal
Nano-Materials
Biophotonic Dynamics
Spatio-Temporal Dynamics of Rotary Molecular
Motors
A Biological Saturable Absorber
Spatio-Temporal Luminescence of a Disordered
Quantum Dot Nano-Material
Spatio-Temporal Phase Dynamics
Coherence Properties of Quantum Dot
Nano-Materials
A Bio-Electronic Network of Routable Molecular
Interconnects
Nano-Thermodynamics and Rheo-Dynamics
Quantum Dots
Quantum Theoretical Theory Reveals Limits for the
Definition of Temperature on the Nano-Scale
Shear-Induced Chaos in Maxwell-Model
Fluids Lyapunov-Exponet
Period-Doubling and Period-Undoubling Bifurcations