Measuring cotunneling in its wake

Zilberberg, Oded; Carmi, Assaf; Romito, Alessandro

Measuring cotunneling in its wake

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Datum

2014

Autor:innen

Zilberberg, Oded

Carmi, Assaf

Romito, Alessandro

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review B ; 90 (2014), 20. - 205413. - American Physical Society (APS). - ISSN 2469-9950. - eISSN 2469-9969

Zusammenfassung

We introduce a rate formalism to treat classically forbidden electron transport through a quantum dot (cotunneling) in the presence of a coupled measurement device. We demonstrate this formalism for a toy model case of cotunneling through a single-level dot while being coupled to a strongly pinched-off quantum point contact (QPC). We find that the detector generates three types of back-action: the measurement collapses the coherent transport through the virtual state, but at the same time allows for QPC-assisted incoherent transport, and widens the dot level. Last, we obtain the measured cotunneling time from the cross correlation between dot and QPC currents.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

ZILBERBERG, Oded, Assaf CARMI, Alessandro ROMITO, 2014. Measuring cotunneling in its wake. In: Physical Review B. American Physical Society (APS). 90(20), 205413. ISSN 2469-9950. eISSN 2469-9969. Available under: doi: 10.1103/PhysRevB.90.205413

BibTex

@article{Zilberberg2014Measu-54927,
  year={2014},
  doi={10.1103/PhysRevB.90.205413},
  title={Measuring cotunneling in its wake},
  number={20},
  volume={90},
  issn={2469-9950},
  journal={Physical Review B},
  author={Zilberberg, Oded and Carmi, Assaf and Romito, Alessandro},
  note={Article Number: 205413}
}

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