Výsledky vyhledávání - "Chorley, S. J."

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A non-invasive electron thermometer based on charge sensing of a quantum dot

Autor: Mavalankar, A., Chorley, S. J., Griffiths, J., Jones, G. A. C., Farrer, I., Ritchie, D. A., Smith, C. G.

We present a thermometry scheme to extract the temperature of a 2DEG by monitoring the charge occupation of a weakly tunnel-coupled 'thermometer' quantum dot using a quantum point contact detector. Electronic temperatures between 97 mK and 307 mK are

Externí odkaz: http://arxiv.org/abs/1305.6881

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Tunable Kondo physics in a carbon nanotube double quantum dot

Autor: Chorley, S. J., Galpin, M. R., Jayatilaka, F. W., Smith, C. G., Logan, D. E., Buitelaar, M. R.

Publikováno v: Phys. Rev. Lett. 109, 156804 (2012)

We investigate a tunable two-impurity Kondo system in a strongly correlated carbon nanotube double quantum dot, accessing the full range of charge regimes. In the regime where both dots contain an unpaired electron, the system approaches the two-impu

Externí odkaz: http://arxiv.org/abs/1209.3735

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Quantized Charge Pumping through a Carbon Nanotube Double Quantum Dot

Autor: Chorley, S. J., Frake, J., Smith, C. G., Jones, G. A. C., Buitelaar, M. R.

Publikováno v: Appl. Phys. Lett. 100, 143104 (2012)

We demonstrate single-electron pumping in a gate-defined carbon nanotube double quantum dot. By periodic modulation of the potentials of the two quantum dots we move the system around charge triple points and transport exactly one electron or hole pe

Externí odkaz: http://arxiv.org/abs/1204.1044

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Measuring the complex admittance of a carbon nanotube double quantum dot

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

Publikováno v: Phys. Rev. Lett. 108, 036802 (2012)

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 admi

Externí odkaz: http://arxiv.org/abs/1109.1827

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Single Spin Detection with a Carbon Nanotube Double Quantum Dot

Autor: Chorley, S. J., Giavaras, G., Wabnig, J., Jones, G. A. C., Smith, C. G., Briggs, G. A. D., Buitelaar, M. R.

Spin qubits defined in carbon nanotube quantum dots are of considerable interest for encoding and manipulating quantum information because of the long electron spin coherence times expected. However, before carbon nanotubes can find applications in q

Externí odkaz: http://arxiv.org/abs/1004.4377

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