dorsal/arxiv
View SchemaCoherence Time of a Solid-State Nuclear Qubit
| Authors | T. D. Ladd, D. Maryenko, E. Abe, K. M. Itoh, Y. Yamamoto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0309164 |
| URL | https://arxiv.org/abs/quant-ph/0309164 |
| DOI | 10.1103/PhysRevB.71.014401 |
| Journal | Phys. Rev. B 71, 014401 (2005) |
Abstract
We report NMR experiments using high-power, RF decoupling techniques to show that a 29-Si nuclear spin qubit in a solid silicon crystal at room temperature can preserve quantum phase for 10^9 precessional periods. The coherence times we report are longer than for any other observed solid-state qubit by more than four orders of magnitude. In high quality crystals, these times are limited by residual dipolar couplings and can be further improved by isotopic depletion. In defect-heavy samples, we provide evidence for decoherence limited by 1/f noise. These results provide insight toward proposals for solid-state nuclear-spin-based quantum memories and quantum computers based on silicon.
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"abstract": "We report NMR experiments using high-power, RF decoupling techniques to show\nthat a 29-Si nuclear spin qubit in a solid silicon crystal at room temperature\ncan preserve quantum phase for 10^9 precessional periods. The coherence times\nwe report are longer than for any other observed solid-state qubit by more than\nfour orders of magnitude. In high quality crystals, these times are limited by\nresidual dipolar couplings and can be further improved by isotopic depletion.\nIn defect-heavy samples, we provide evidence for decoherence limited by 1/f\nnoise. These results provide insight toward proposals for solid-state\nnuclear-spin-based quantum memories and quantum computers based on silicon.",
"arxiv_id": "quant-ph/0309164",
"authors": [
"T. D. Ladd",
"D. Maryenko",
"E. Abe",
"K. M. Itoh",
"Y. Yamamoto"
],
"categories": [
"quant-ph",
"cond-mat"
],
"doi": "10.1103/PhysRevB.71.014401",
"journal_ref": "Phys. Rev. B 71, 014401 (2005)",
"title": "Coherence Time of a Solid-State Nuclear Qubit",
"url": "https://arxiv.org/abs/quant-ph/0309164"
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