dorsal/arxiv
View SchemaA nonlinear mechanism of charge qubit decoherence in a lossy cavity: the quasi normal mode approach
| Authors | Y. B. Gao, Y. D. Wang, C. P. Sun |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409053 |
| URL | https://arxiv.org/abs/quant-ph/0409053 |
| DOI | 10.1103/PhysRevA.71.032302 |
| Journal | Phys. Rev. A 71, 032302 (2005) |
Abstract
In the viewpoint of quasi normal modes, we describe a novel decoherence mechanism of charge qubit of Josephson Junctions (JJ) in a lossy micro-cavity, which can appear in the realistic experiment for quantum computation based on JJ qubit. We show that the nonlinear coupling of a charge qubit to quantum cavity field can result in an additional dissipation of resonant mode due to its effective interaction between those non-resonant modes and a resonant mode, which is induced by the charge qubit itself. We calculate the characterized time of the novel decoherence by making use of the system plus bath method.
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"abstract": "In the viewpoint of quasi normal modes, we describe a novel decoherence\nmechanism of charge qubit of Josephson Junctions (JJ) in a lossy micro-cavity,\nwhich can appear in the realistic experiment for quantum computation based on\nJJ qubit. We show that the nonlinear coupling of a charge qubit to quantum\ncavity field can result in an additional dissipation of resonant mode due to\nits effective interaction between those non-resonant modes and a resonant mode,\nwhich is induced by the charge qubit itself. We calculate the characterized\ntime of the novel decoherence by making use of the system plus bath method.",
"arxiv_id": "quant-ph/0409053",
"authors": [
"Y. B. Gao",
"Y. D. Wang",
"C. P. Sun"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.71.032302",
"journal_ref": "Phys. Rev. A 71, 032302 (2005)",
"title": "A nonlinear mechanism of charge qubit decoherence in a lossy cavity: the quasi normal mode approach",
"url": "https://arxiv.org/abs/quant-ph/0409053"
},
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