Forster, F. and Petersen, G. and Manus, S. and Haenggi, P. and Schuh, D. and Wegscheider, W. and Kohler, S. and Ludwig, S. (2014) Characterization of Qubit Dephasing by Landau-Zener-Stuckelberg-Majorana Interferometry. PHYSICAL REVIEW LETTERS, 112 (11): 116803. ISSN 0031-9007, 1079-7114
Full text not available from this repository.Abstract
Controlling coherent interaction at avoided crossings and the dynamics there is at the heart of quantum information processing. A particularly intriguing dynamics is observed in the Landau-Zener regime, where periodic passages through the avoided crossing result in an interference pattern carrying information about qubit properties. In this Letter, we demonstrate a straightforward method, based on steady-state experiments, to obtain all relevant information about a qubit, including complex environmental influences. We use a two-electron charge qubit defined in a lateral double quantum dot as test system and demonstrate a long coherence time of T-2 similar or equal to 200 ns, which is limited by electron-phonon interaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 2-LEVEL SYSTEM; DOT; DYNAMICS; SPECTROSCOPY; INTERFERENCE; COHERENCE; |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Werner Wegscheider |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Nov 2019 13:54 |
| Last Modified: | 15 Nov 2019 13:55 |
| URI: | https://pred.uni-regensburg.de/id/eprint/10458 |
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