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Measuring cotunneling in its wake

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Measuring cotunneling in its wake. / Zilberberg, Oded; Carmi, Assaf; Romito, Alessandro.
In: Physical review B, Vol. 90, No. 20, 205413, 11.11.2014.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

Zilberberg, O, Carmi, A & Romito, A 2014, 'Measuring cotunneling in its wake', Physical review B, vol. 90, no. 20, 205413. https://doi.org/10.1103/PhysRevB.90.205413

APA

Zilberberg, O., Carmi, A., & Romito, A. (2014). Measuring cotunneling in its wake. Physical review B, 90(20), Article 205413. https://doi.org/10.1103/PhysRevB.90.205413

Vancouver

Zilberberg O, Carmi A, Romito A. Measuring cotunneling in its wake. Physical review B. 2014 Nov 11;90(20):205413. doi: 10.1103/PhysRevB.90.205413

Author

Zilberberg, Oded ; Carmi, Assaf ; Romito, Alessandro. / Measuring cotunneling in its wake. In: Physical review B. 2014 ; Vol. 90, No. 20.

Bibtex

@article{c196356d6dbc43d7908df8240efc166b,
title = "Measuring cotunneling in its wake",
abstract = "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.",
keywords = "cond-mat.mes-hall, quant-ph",
author = "Oded Zilberberg and Assaf Carmi and Alessandro Romito",
note = "15 pages, 9 figures, 1 appendix, published version",
year = "2014",
month = nov,
day = "11",
doi = "10.1103/PhysRevB.90.205413",
language = "English",
volume = "90",
journal = "Physical review B",
issn = "2469-9950",
publisher = "AMER PHYSICAL SOC",
number = "20",

}

RIS

TY - JOUR

T1 - Measuring cotunneling in its wake

AU - Zilberberg, Oded

AU - Carmi, Assaf

AU - Romito, Alessandro

N1 - 15 pages, 9 figures, 1 appendix, published version

PY - 2014/11/11

Y1 - 2014/11/11

N2 - 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.

AB - 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.

KW - cond-mat.mes-hall

KW - quant-ph

U2 - 10.1103/PhysRevB.90.205413

DO - 10.1103/PhysRevB.90.205413

M3 - Journal article

VL - 90

JO - Physical review B

JF - Physical review B

SN - 2469-9950

IS - 20

M1 - 205413

ER -