Solid State Spectroscopy Quantum Computing.

The group has a long history in high resolution solid state laser spectroscopy, contributing to understanding the physics of color centres and development of laser stabilisation and spectroscopic techniques. Current research investigates Quantum Information Processing using optical manipulation of nuclear and electron spin systems in solid state hosts. The materials of particular interest are rare-earth doped insulators and the N-V centre in diamond.

Quantum Information Processing investigations use Raman processes to optically manipulate the spin state of the chosen system. Optical manipulation and detection results in significant advantages when compared to conventional NMR, important for many of the breakthroughs achieved by the group. Of particular note, the group demonstrated the first solid state 2 qubit logic gate and developed techniques to realise the longest nuclear spin decoherence times achieved in solid state systems. This has allowed significantly longer and higher fidelity quantum memory demonstrations than previously possible. Current research directions are:

• Quantum logic gate
  • Ion-ion stark interaction
  • Multi qubit scaling
• Qubit decoherence minimisation
  • Static magnetic field techniques
  • Dynamic Decoherence Control
• Quantum memories
  • EIT or Slow light
  • Controlled inhomogeneous broadening Echo
    
• Single qubit detection
  • Confocal microscopy
  • Single Photon Source