dorsal/arxiv
View SchemaScalable register initialization for quantum computing in an optical lattice
| Authors | Gavin K. Brennen, Guido Pupillo, Ana Maria Rey, Charles W. Clark, Carl J. Williams |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0312069 |
| URL | https://arxiv.org/abs/quant-ph/0312069 |
| DOI | 10.1088/0953-4075/38/11/010 |
| Journal | Journal of Physics B 38, 1687 (2005). |
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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"abstract": "The Mott insulator state created by loading an atomic Bose-Einstein\ncondensate (BEC) into an optical lattice may be used as a means to prepare a\nregister of atomic qubits in a quantum computer. Such architecture requires a\nlattice commensurately filled with atoms, which corresponds to the insulator\nstate only in the limit of zero inter-well tunneling. We show that a lattice\nwith spatial inhomogeneity created by a quadratic magnetic trapping potential\ncan be used to isolate a subspace in the center which is impervious to\nhole-hoping. Components of the wavefunction with more than one atom in any well\ncan be projected out by selective measurement on a molecular photo-associative\ntransition. Maintaining the molecular coupling induces a quantum Zeno effect\nthat can sustain a commensurately filled register for the duration of a quantum\ncomputation.",
"arxiv_id": "quant-ph/0312069",
"authors": [
"Gavin K. Brennen",
"Guido Pupillo",
"Ana Maria Rey",
"Charles W. Clark",
"Carl J. Williams"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1088/0953-4075/38/11/010",
"journal_ref": "Journal of Physics B 38, 1687 (2005).",
"title": "Scalable register initialization for quantum computing in an optical lattice",
"url": "https://arxiv.org/abs/quant-ph/0312069"
},
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