dorsal/arxiv
View SchemaUniversal Quantum Logic from Zeeman and Anisotropic Exchange Interactions
| Authors | L. -A. Wu, D. A. Lidar |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0202135 |
| URL | https://arxiv.org/abs/quant-ph/0202135 |
| DOI | 10.1103/PhysRevA.66.062314 |
| Journal | Phys. Rev. A 66, 062314 (2002) |
Abstract
Some of the most promising proposals for scalable solid-state quantum computing, e.g., those using electron spins in quantum dots or donor electron or nuclear spins in Si, rely on a two-qubit quantum gate that is ideally generated by an isotropic exchange interaction. However, an anisotropic perturbation arising from spin-orbit coupling is inevitably present. Previous studies focused on removing the anisotropy. Here we introduce a new universal set of quantum logic gates that takes advantage of the anisotropic perturbation. The price is a constant but modest factor in additional pulses. The gain is a scheme that is compatible with the naturally available interactions in spin-based solid-state quantum computers.
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"abstract": "Some of the most promising proposals for scalable solid-state quantum\ncomputing, e.g., those using electron spins in quantum dots or donor electron\nor nuclear spins in Si, rely on a two-qubit quantum gate that is ideally\ngenerated by an isotropic exchange interaction. However, an anisotropic\nperturbation arising from spin-orbit coupling is inevitably present. Previous\nstudies focused on removing the anisotropy. Here we introduce a new universal\nset of quantum logic gates that takes advantage of the anisotropic\nperturbation. The price is a constant but modest factor in additional pulses.\nThe gain is a scheme that is compatible with the naturally available\ninteractions in spin-based solid-state quantum computers.",
"arxiv_id": "quant-ph/0202135",
"authors": [
"L. -A. Wu",
"D. A. Lidar"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1103/PhysRevA.66.062314",
"journal_ref": "Phys. Rev. A 66, 062314 (2002)",
"title": "Universal Quantum Logic from Zeeman and Anisotropic Exchange Interactions",
"url": "https://arxiv.org/abs/quant-ph/0202135"
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