arXivDaily arXiv每日学术速递 周一至周五更新
北美退伍军人节(Veterans Day),12 日无更新
arXiv 1109.1827cond-mat.mes-hall
收藏

碳纳米管双量子点复导纳的测量

Measuring the complex admittance of a carbon nanotube double quantum dot

S. J. Chorley, J. Wabnig, Z. V. Penfold-Fitch, K. D. Petersson, J. Frake, C. G. Smith, M. R. Buitelaar

摘要:

我们研究了耦合到谐振电路的可调谐碳纳米管双量子点的射频反射测量。通过测量反射射频信号的同相和正交分量,我们能够确定双量子点的复导纳作为单电子态能量的函数。的测量结果被发现是在很好的协议与理论模型的设备在非相干限制。除了基本的兴趣,我们的研究结果提出了一个重要的一步,在碳纳米管量子点的非侵入性的电荷和自旋状态读出。

英文摘要:

We investigate radio-frequency (rf) reflectometry in a tunable carbon nanotube double quantum dot coupled to a resonant circuit. By measuring the in-phase and quadrature components of the reflected rf signal, we are able to determine the complex admittance of the double quantum dot as a function of the energies of the single-electron states. The measurements are found to be in good agreement with a theoretical model of the device in the incoherent limit. Besides being of fundamental interest, our results present an important step forward towards non-invasive charge and spin state readout in carbon nanotube quantum dots.

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。

↑