Title | Scalable register initialization for quantum computing in an optical lattice
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Publication Type | Journal Article |
Year of Publication | 2005 |
Authors | Brennen, GK, Pupillo, G, Rey, AMaria, Clark, CW, Williams, CJ |
Journal | Journal of Physics B: Atomic, Molecular and Optical Physics |
Volume | 38 |
Issue | 11 |
Pages | 1687 - 1694 |
Date Published | 2005/06/14 |
Abstract | The Mott insulator state created by loading an atomic Bose-Einstein
condensate (BEC) into an optical lattice may be used as a means to prepare a
register of atomic qubits in a quantum computer. Such architecture requires a
lattice commensurately filled with atoms, which corresponds to the insulator
state only in the limit of zero inter-well tunneling. We show that a lattice
with spatial inhomogeneity created by a quadratic magnetic trapping potential
can be used to isolate a subspace in the center which is impervious to
hole-hoping. Components of the wavefunction with more than one atom in any well
can be projected out by selective measurement on a molecular photo-associative
transition. Maintaining the molecular coupling induces a quantum Zeno effect
that can sustain a commensurately filled register for the duration of a quantum
computation.
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URL | http://arxiv.org/abs/quant-ph/0312069v1 |
DOI | 10.1088/0953-4075/38/11/010 |
Short Title | J. Phys. B: At. Mol. Opt. Phys. |