dorsal/arxiv
View SchemaDecoherence in a scalable adiabatic quantum computer
| Authors | S. Ashhab, J. R. Johansson, Franco Nori |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0608212 |
| URL | https://arxiv.org/abs/quant-ph/0608212 |
| DOI | 10.1103/PhysRevA.74.052330 |
| Journal | Phys. Rev. A 74, 052330 (2006) |
Abstract
We consider the effects of decoherence on Landau-Zener crossings encountered in a large-scale adiabatic-quantum-computing setup. We analyze the dependence of the success probability, i.e. the probability for the system to end up in its new ground state, on the noise amplitude and correlation time. We determine the optimal sweep rate that is required to maximize the success probability. We then discuss the scaling of decoherence effects with increasing system size. We find that those effects can be important for large systems, even if they are small for each of the small building blocks.
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"abstract": "We consider the effects of decoherence on Landau-Zener crossings encountered\nin a large-scale adiabatic-quantum-computing setup. We analyze the dependence\nof the success probability, i.e. the probability for the system to end up in\nits new ground state, on the noise amplitude and correlation time. We determine\nthe optimal sweep rate that is required to maximize the success probability. We\nthen discuss the scaling of decoherence effects with increasing system size. We\nfind that those effects can be important for large systems, even if they are\nsmall for each of the small building blocks.",
"arxiv_id": "quant-ph/0608212",
"authors": [
"S. Ashhab",
"J. R. Johansson",
"Franco Nori"
],
"categories": [
"quant-ph",
"cond-mat.other"
],
"doi": "10.1103/PhysRevA.74.052330",
"journal_ref": "Phys. Rev. A 74, 052330 (2006)",
"title": "Decoherence in a scalable adiabatic quantum computer",
"url": "https://arxiv.org/abs/quant-ph/0608212"
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