UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Measuring the complex admittance of a carbon nanotube double quantum dot.

Chorley, SJ; Wabnig, J; Penfold-Fitch, ZV; Petersson, KD; Frake, J; Smith, CG; Buitelaar, MR; (2012) Measuring the complex admittance of a carbon nanotube double quantum dot. Physical Review Letters , 108 (3) , Article 036802. 10.1103/PhysRevLett.108.036802. Green open access

[img]
Preview
PDF
1366975.pdf

Download (292kB)

Abstract

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. In addition to being of fundamental interest, our results present an important step forward towards noninvasive charge and spin state readout in carbon nanotube quantum dots.

Type: Article
Title: Measuring the complex admittance of a carbon nanotube double quantum dot.
Location: US
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.108.036802
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.108.036802
Language: English
Additional information: © 2012 American Physical Society
URI: http://discovery.ucl.ac.uk/id/eprint/1366975
Downloads since deposit
74Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item