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arXiv 0705.3166cond-mat.mes-hall
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利用双量子点实现频率选择性单光子探测

Frequency-selective single photon detection using a double quantum dot

S. Gustavsson, M. Studer, R. Leturcq, T. Ihn, K. Ensslin, D. C. Driscoll, A. C. Gossard

摘要:

采用双量子点作为频率可调谐的片上微波探测器,研究了近场量子点接触中电子散粒噪声的辐射特性。该装置是通过监测由于光子吸收的量子点之间的电子的非弹性隧穿来实现的。被吸收的辐射的频率由点之间的能量分离来设置,这很容易用栅极电压来调节。利用时间分辨电荷探测技术,我们可以直接将探测到的隧穿电子与单个光子的吸收联系起来。

英文摘要:

We use a double quantum dot as a frequency-tunable on-chip microwave detector to investigate the radiation from electron shot-noise in a near-by quantum point contact. The device is realized by monitoring the inelastic tunneling of electrons between the quantum dots due to photon absorption. The frequency of the absorbed radiation is set by the energy separation between the dots, which is easily tuned with gate voltages. Using time-resolved charge detection techniques, we can directly relate the detection of a tunneling electron to the absorption of a single photon.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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