dorsal/arxiv
View SchemaQuantum computing with magnetically interacting atoms
| Authors | Andrei Derevianko, Caleb C. Cannon |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0406117 |
| URL | https://arxiv.org/abs/quant-ph/0406117 |
| DOI | 10.1103/PhysRevA.70.062319 |
| Journal | Phys. Rev. A 70, 062319 (2004) |
Abstract
We propose a scalable quantum-computing architecture based on cold atoms confined to sites of a tight optical lattice. The lattice is placed in a non-uniform magnetic field and the resulting Zeeman sublevels define qubit states. Microwave pulses tuned to space-dependent resonant frequencies are used for individual addressing. The atoms interact via magnetic-dipole interactions allowing implementation of a universal controlled-NOT gate. The resulting gate operation times for alkalis are on the order of milliseconds, much faster then the anticipated decoherence times. Single qubit operations take about 10 microseconds. Analysis of motional decoherence due to NOT operations is given. We also comment on the improved feasibility of the proposed architecture with complex open-shell atoms, such as Cr, Eu and metastable alkaline-earth atoms with larger magnetic moments.
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"abstract": "We propose a scalable quantum-computing architecture based on cold atoms\nconfined to sites of a tight optical lattice. The lattice is placed in a\nnon-uniform magnetic field and the resulting Zeeman sublevels define qubit\nstates. Microwave pulses tuned to space-dependent resonant frequencies are used\nfor individual addressing. The atoms interact via magnetic-dipole interactions\nallowing implementation of a universal controlled-NOT gate. The resulting gate\noperation times for alkalis are on the order of milliseconds, much faster then\nthe anticipated decoherence times. Single qubit operations take about 10\nmicroseconds. Analysis of motional decoherence due to NOT operations is given.\nWe also comment on the improved feasibility of the proposed architecture with\ncomplex open-shell atoms, such as Cr, Eu and metastable alkaline-earth atoms\nwith larger magnetic moments.",
"arxiv_id": "quant-ph/0406117",
"authors": [
"Andrei Derevianko",
"Caleb C. Cannon"
],
"categories": [
"quant-ph",
"physics.atom-ph"
],
"doi": "10.1103/PhysRevA.70.062319",
"journal_ref": "Phys. Rev. A 70, 062319 (2004)",
"title": "Quantum computing with magnetically interacting atoms",
"url": "https://arxiv.org/abs/quant-ph/0406117"
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