dorsal/arxiv
View SchemaQuantum Information Processing in Optical Lattices and Magnetic Microtraps
| Authors | Philipp Treutlein, Tilo Steinmetz, Yves Colombe, Benjamin Lev, Peter Hommelhoff, Jakob Reichel, Markus Greiner, Olaf Mandel, Arthur Widera, Tim Rom, Immanuel Bloch, Theodor W. Hänsch |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0605163 |
| URL | https://arxiv.org/abs/quant-ph/0605163 |
| DOI | 10.1002/prop.200610325 |
| Journal | Fortschr. Phys. 54, 702-718 (2006) |
Abstract
We review our experiments on quantum information processing with neutral atoms in optical lattices and magnetic microtraps. Atoms in an optical lattice in the Mott insulator regime serve as a large qubit register. A spin-dependent lattice is used to split and delocalize the atomic wave functions in a controlled and coherent way over a defined number of lattice sites. This is used to experimentally demonstrate a massively parallel quantum gate array, which allows the creation of a highly entangled many-body cluster state through coherent collisions between atoms on neighbouring lattice sites. In magnetic microtraps on an atom chip, we demonstrate coherent manipulation of atomic qubit states and measure coherence lifetimes exceeding one second at micron-distance from the chip surface. We show that microwave near-fields on the chip can be used to create state-dependent potentials for the implementation of a quantum controlled phase gate with these robust qubit states. For single atom detection and preparation, we have developed high finesse fiber Fabry-Perot cavities and integrated them on the atom chip. We present an experiment in which we detected a very small number of cold atoms magnetically trapped in the cavity using the atom chip.
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"abstract": "We review our experiments on quantum information processing with neutral\natoms in optical lattices and magnetic microtraps.\n Atoms in an optical lattice in the Mott insulator regime serve as a large\nqubit register. A spin-dependent lattice is used to split and delocalize the\natomic wave functions in a controlled and coherent way over a defined number of\nlattice sites. This is used to experimentally demonstrate a massively parallel\nquantum gate array, which allows the creation of a highly entangled many-body\ncluster state through coherent collisions between atoms on neighbouring lattice\nsites.\n In magnetic microtraps on an atom chip, we demonstrate coherent manipulation\nof atomic qubit states and measure coherence lifetimes exceeding one second at\nmicron-distance from the chip surface. We show that microwave near-fields on\nthe chip can be used to create state-dependent potentials for the\nimplementation of a quantum controlled phase gate with these robust qubit\nstates. For single atom detection and preparation, we have developed high\nfinesse fiber Fabry-Perot cavities and integrated them on the atom chip. We\npresent an experiment in which we detected a very small number of cold atoms\nmagnetically trapped in the cavity using the atom chip.",
"arxiv_id": "quant-ph/0605163",
"authors": [
"Philipp Treutlein",
"Tilo Steinmetz",
"Yves Colombe",
"Benjamin Lev",
"Peter Hommelhoff",
"Jakob Reichel",
"Markus Greiner",
"Olaf Mandel",
"Arthur Widera",
"Tim Rom",
"Immanuel Bloch",
"Theodor W. H\u00e4nsch"
],
"categories": [
"quant-ph"
],
"doi": "10.1002/prop.200610325",
"journal_ref": "Fortschr. Phys. 54, 702-718 (2006)",
"title": "Quantum Information Processing in Optical Lattices and Magnetic Microtraps",
"url": "https://arxiv.org/abs/quant-ph/0605163"
},
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