1. QUANTUM INFORMATION AND OPTICAL LATTICES

For quantum information processing to become more efficient than classical computation, it requires the coherent manipulation of many qubits with a high degree of accuracy. Recently, we have witnessed rapid development of trapping and manipulating technology of ultra cold atoms superposed with optical lattices.
They offer the great advantage of having well ordered systems with up to a few million atoms in regular lattices where they can be addressed individually or as a whole.
Aim of this research area is to use the large scale structures of optical lattices to engineer and explore well controlled quantum systems of much bigger scale than what is up to now possible, to apply it to quantum simulation, computation and communication and to improve our knowledge of collective phenomena arising from the cooperative interaction of the sites of the atom lattice.

References:
[1] J. K. Pachos and P. L. Knight (2003), Quantum Computation with a One-Dimensional Optical Lattice, Phys. Rev. Lett. 91, 107902, quant-ph/0301084.
[2] S. Scheel, J. K. Pachos, E.A. Hinds and P. L. Knight (2004), Quantum gates and decoherence, quant-ph/0403152.
[3] A. Kay and J. K. Pachos (2004), Quantum computation in optical lattices via global laser addressing, New J. Phys. 6 126, quant-ph/0406073.