Physics – Quantum Physics
Scientific paper
2004-07-15
Optics and Spectroscopy, 99, 355-372 (2005)
Physics
Quantum Physics
17 pages, 16 figues, based on talk presented by J. K. Pachos at CEWQO 2004
Scientific paper
10.1134/1.2055926
The regular structures obtained by optical lattice technology and their behaviour are analysed from the quantum information perspective. Initially, we demonstrate that a triangular optical lattice of two atomic species, bosonic or fermionic, can be employed to generate a variety of novel spin-1/2 models that include effective three-spin interactions. Such interactions can be employed to simulate specific one or two dimensional physical systems that are of particular interest for their condensed matter and entanglement properties. In particular, connections between the scaling behaviour of entanglement and the entanglement properties of closely spaced spins are drawn. Moreover, three-spin interactions are well suited to support quantum computing without the need to manipulate individual qubits. By employing Raman transitions or the interaction of the atomic electric dipole moment with magnetic field gradients, one can generate Hamiltonians that can be used for the physical implementation of geometrical or topological objects. This work serves as a review article that also includes many new results.
Kay Alastair
Lee Derek K. K.
Pachos Jiannis K.
Plenio Martin . B.
Reuter Moritz E.
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