Radio frequency pulsed-gate charge spectroscopy on coupled quantum dots

D. Harbusch; S. Manus; H. P. Tranitz; W. Wegscheider; S. Ludwig

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Radio frequency pulsed-gate charge spectroscopy on coupled quantum dots

机译：耦合量子点上的射频脉冲门电荷光谱

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Time-resolved electron dynamics in coupled quantum dots is directly observed by a pulsed-gate technique. While individual gate voltages are modulated with periodic pulse trains, average charge occupations are measured with a nearby quantum point contact as detector. A key component of our setup is a sample holder optimized for broadband radio frequency applications. Our setup can detect displacements of single electrons on time scales well below a nanosecond. Tunneling rates through individual barriers and relaxation times are obtained by using a rate equation model. We demonstrate the full characterization of a tunable double quantum dot using this technique, which could also be used for coherent charge qubit control.

机译：通过脉冲门技术可以直接观察耦合量子点中时间分辨的电子动力学。虽然各个栅极电压通过周期性脉冲序列进行调制，但平均电荷占用却以附近的量子点触点作为检测器进行测量。我们设置的关键部分是针对宽带射频应用进行了优化的样品架。我们的设置可以在远低于纳秒的时间范围内检测单个电子的位移。通过使用速率方程模型，可以获得通过各个势垒的隧道速率和弛豫时间。我们演示了使用此技术可调谐双量子点的完整特征，也可用于相干电荷量子位控制。

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来源
《Physical review》 |2010年第19期|p.195310.1-195310.8|共8页
作者
D. Harbusch; S. Manus; H. P. Tranitz; W. Wegscheider; S. Ludwig;
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作者单位

Center for NanoScience and Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Geschwister-Scholl-Platz 1,D-80539 Munchen, Germany;

Center for NanoScience and Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Geschwister-Scholl-Platz 1,D-80539 Munchen, Germany;

Institut fuer Experimented Physik, Universitaet Regensburg, D-93040 Regensburg, Germany;

Laboratory for Solid State Physics, ETH Zuerich, CH-8093 Zuerich, Switzerland;

Center for NanoScience and Fakultaet fuer Physik, Ludwig-Maximilians-Universitaet Muenchen, Geschwister-Scholl-Platz 1,D-80539 Munchen, Germany;

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正文语种 eng
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关键词
quantum dots; high-speed techniques (microsecond to femtosecond); quantum information; radiowave and microwave (including millimeter wave) technology;

机译：量子点;高速技术（微秒至飞秒）;量子信息无线电波和微波（包括毫米波）技术;

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1. Fast sensing of double-dot charge arrangement and spin state with a radio-frequency sensor quantum dot [J] . C. Barthel, M. Kjaergaard, J. Medford, Physical review . 2010,第16期

机译：利用射频传感器量子点快速检测双点电荷排列和自旋状态
2. Radio-Frequency-Detected Fast Charge Sensing in Undoped Silicon Quantum Dots [J] . Noiri Akito, Takeda Kenta, Yoneda Jun, Nano letters . 2020,第2期

机译：未掺杂的硅量子点中的射频检测到的快速充电感测
3. Radio-Frequency-Detected Fast Charge Sensing in Undoped Silicon Quantum Dots [J] . Nature reviews Cancer . 2020,第2期

机译：未掺杂的硅量子点中的射频检测到的快速充电感测
4. Charge Readout of a Vertical Quantum Dot Using a Laterally Weakly Coupled Quantum Dot as a Detector [C] . T. Kodera, Y. Iwai, W.G. van der Wiel, International Conference on Low Temperature Physics . 2005

机译：使用作为探测器的横向弱耦合的量子点电荷读出垂直量子点
5. Double quantum dot coupled to a radio-frequency single-electron transistor: Quantum measurement and back action. [D] . Thalakulam, Madhu. 2004

机译：双量子点耦合到射频单电子晶体管：量子测量和反向作用。
6. Substrate Temperature Dependent Surface Morphology and Photoluminescence of Germanium Quantum Dots Grown by Radio Frequency Magnetron Sputtering [O] . Alireza Samavati, Zulkafli Othaman, Sib Krishna Ghoshal, 2012

机译：射频磁控溅射法生长的锗量子点与衬底温度相关的表面形貌和光致发光
7. Radio frequency pulsed-gate charge spectroscopy on coupled quantum dots [O] . Harbusch, D., Manus, S., Tranitz, H. P., 2010

机译：耦合量子点的射频脉冲门电荷光谱
8. Charge Transfer Between Quantum Dots and Peptide-Coupled Redox Complexes [R] . Medintz, I. L., Pons, T., Trammell, S. A., 2009

机译：量子点与肽偶联氧化还原配合物之间的电荷转移

Radio frequency pulsed-gate charge spectroscopy on coupled quantum dots

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