dorsal/arxiv
View SchemaRobust optimal quantum gates for Josephson charge qubits
| Authors | Simone Montangero, Tommaso Calarco, Rosario Fazio |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0611166 |
| URL | https://arxiv.org/abs/quant-ph/0611166 |
| DOI | 10.1103/PhysRevLett.99.170501 |
| Journal | Phys. Rev. Lett. 99, 170501 (2007) |
Abstract
Quantum optimal control theory allows to design accurate quantum gates. We employ it to design high-fidelity two-bit gates for Josephson charge qubits in the presence of both leakage and noise. Our protocol considerably increases the fidelity of the gate and, more important, it is quite robust in the disruptive presence of 1/f noise. The improvement in the gate performances discussed in this work (errors of the order of 10^{-3}-10^{-4} in realistic cases) allows to cross the fault tolerance threshold.
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"abstract": "Quantum optimal control theory allows to design accurate quantum gates. We\nemploy it to design high-fidelity two-bit gates for Josephson charge qubits in\nthe presence of both leakage and noise. Our protocol considerably increases the\nfidelity of the gate and, more important, it is quite robust in the disruptive\npresence of 1/f noise. The improvement in the gate performances discussed in\nthis work (errors of the order of 10^{-3}-10^{-4} in realistic cases) allows to\ncross the fault tolerance threshold.",
"arxiv_id": "quant-ph/0611166",
"authors": [
"Simone Montangero",
"Tommaso Calarco",
"Rosario Fazio"
],
"categories": [
"quant-ph",
"cond-mat.supr-con"
],
"doi": "10.1103/PhysRevLett.99.170501",
"journal_ref": "Phys. Rev. Lett. 99, 170501 (2007)",
"title": "Robust optimal quantum gates for Josephson charge qubits",
"url": "https://arxiv.org/abs/quant-ph/0611166"
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