An in-situ tunable radio-frequency quantum point contact
Incorporating a variable capacitance diode into a radio-frequency matching circuit allows us to in-situ tune the resonance frequency of an RF quantum point contact, increasing the versatility of the latter as a fast charge sensor of a proximal quantum circuit. The performance of this method is compa...
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| Veröffentlicht in: | arXiv.org 2010-09 |
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| creator | Müller, Thomas Küng, Bruno Studerus, Paul Hellmüller, Sarah Ensslin, Klaus Ihn, Thomas Reinwald, Matthias Wegscheider, Werner |
| description | Incorporating a variable capacitance diode into a radio-frequency matching circuit allows us to in-situ tune the resonance frequency of an RF quantum point contact, increasing the versatility of the latter as a fast charge sensor of a proximal quantum circuit. The performance of this method is compared in detail to conventional low-frequency charge detection. The approach is also applicable to other RF-detection schemes, such as RF-SET circuits. |
| doi_str_mv | 10.48550/arxiv.1009.1746 |
| format | Article |
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| subjects | Physics - Mesoscale and Nanoscale Physics Point contact Radio frequency |
| title | An in-situ tunable radio-frequency quantum point contact |
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