dorsal/arxiv
View SchemaCoherence control for qubits
| Authors | Karen M. Fonseca-Romero, Sigmund Kohler, Peter Hänggi |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0307236 |
| URL | https://arxiv.org/abs/quant-ph/0307236 |
| DOI | 10.1016/j.chemphys.2003.09.015 |
| Journal | Chem. Phys. 296, 307 (2004) |
Abstract
We study the influence of an external driving field on the coherence properties of a qubit under the influence of bit-flip noise. In the presence of driving, two paradigmatic cases are considered: (i) a field that results for a suitable choice of the parameters in so-called coherent destruction of tunneling and (ii) one that commutes with the static qubit Hamiltonian. In each case, we give for high-frequency driving a lower bound for the coherence time. This reveals the conditions under which the external fields can be used for coherence stabilization.
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"abstract": "We study the influence of an external driving field on the coherence\nproperties of a qubit under the influence of bit-flip noise. In the presence of\ndriving, two paradigmatic cases are considered: (i) a field that results for a\nsuitable choice of the parameters in so-called coherent destruction of\ntunneling and (ii) one that commutes with the static qubit Hamiltonian. In each\ncase, we give for high-frequency driving a lower bound for the coherence time.\nThis reveals the conditions under which the external fields can be used for\ncoherence stabilization.",
"arxiv_id": "quant-ph/0307236",
"authors": [
"Karen M. Fonseca-Romero",
"Sigmund Kohler",
"Peter H\u00e4nggi"
],
"categories": [
"quant-ph"
],
"doi": "10.1016/j.chemphys.2003.09.015",
"journal_ref": "Chem. Phys. 296, 307 (2004)",
"title": "Coherence control for qubits",
"url": "https://arxiv.org/abs/quant-ph/0307236"
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