dorsal/arxiv
View SchemaShort-time decoherence of Josephson charge qubit nonlinearly coupling with its environment
| Authors | Xian-Ting Liang, Yong-Jian Xiong |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0409102 |
| URL | https://arxiv.org/abs/quant-ph/0409102 |
| DOI | 10.1016/j.physleta.2004.09.053 |
| Journal | Physics Letters A 332 (2004) 8-16 |
Abstract
At first, we generally investigate the short-time decoherence of a qubit nonlinearly coupling with a bath. The measure of the decoherence is chosen as the maximum norm of the deviation density operator. Then we concretely investigate the Josephson charge qubit (JCQ) model. It is shown that at the temperature T=30mK, the loss of fidelity (due to decoherence) of the JCQ is bigger than the DiVincenzo low decoherence criterion. The decoherence will decrease with the decrease of the experimental temperature. When the temperature decreases to T=0.3mK the DiVincenzo low decoherence criterion can be satisfied.
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"abstract": "At first, we generally investigate the short-time decoherence of a qubit\nnonlinearly coupling with a bath. The measure of the decoherence is chosen as\nthe maximum norm of the deviation density operator. Then we concretely\ninvestigate the Josephson charge qubit (JCQ) model. It is shown that at the\ntemperature T=30mK, the loss of fidelity (due to decoherence) of the JCQ is\nbigger than the DiVincenzo low decoherence criterion. The decoherence will\ndecrease with the decrease of the experimental temperature. When the\ntemperature decreases to T=0.3mK the DiVincenzo low decoherence criterion can\nbe satisfied.",
"arxiv_id": "quant-ph/0409102",
"authors": [
"Xian-Ting Liang",
"Yong-Jian Xiong"
],
"categories": [
"quant-ph"
],
"doi": "10.1016/j.physleta.2004.09.053",
"journal_ref": "Physics Letters A 332 (2004) 8-16",
"title": "Short-time decoherence of Josephson charge qubit nonlinearly coupling with its environment",
"url": "https://arxiv.org/abs/quant-ph/0409102"
},
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