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Gigahertz quantized charge pumping in graphene quantum dots

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Gigahertz quantized charge pumping in graphene quantum dots. / Connolly, M. R.; Chiu, K. L.; Giblin, S. P.; Kataoka, M.; Fletcher, J. D.; Chua, C.; Griffiths, J. P.; Jones, G. A. C.; Falko, Vladimir; Smith, C. G.; Janssen, T. J. B. M.

In: Nature Nanotechnology, Vol. 8, No. 6, 06.2013, p. 417-420.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Connolly, MR, Chiu, KL, Giblin, SP, Kataoka, M, Fletcher, JD, Chua, C, Griffiths, JP, Jones, GAC, Falko, V, Smith, CG & Janssen, TJBM 2013, 'Gigahertz quantized charge pumping in graphene quantum dots', Nature Nanotechnology, vol. 8, no. 6, pp. 417-420. https://doi.org/10.1038/NNANO.2013.73

APA

Connolly, M. R., Chiu, K. L., Giblin, S. P., Kataoka, M., Fletcher, J. D., Chua, C., Griffiths, J. P., Jones, G. A. C., Falko, V., Smith, C. G., & Janssen, T. J. B. M. (2013). Gigahertz quantized charge pumping in graphene quantum dots. Nature Nanotechnology, 8(6), 417-420. https://doi.org/10.1038/NNANO.2013.73

Vancouver

Connolly MR, Chiu KL, Giblin SP, Kataoka M, Fletcher JD, Chua C et al. Gigahertz quantized charge pumping in graphene quantum dots. Nature Nanotechnology. 2013 Jun;8(6):417-420. https://doi.org/10.1038/NNANO.2013.73

Author

Connolly, M. R. ; Chiu, K. L. ; Giblin, S. P. ; Kataoka, M. ; Fletcher, J. D. ; Chua, C. ; Griffiths, J. P. ; Jones, G. A. C. ; Falko, Vladimir ; Smith, C. G. ; Janssen, T. J. B. M. / Gigahertz quantized charge pumping in graphene quantum dots. In: Nature Nanotechnology. 2013 ; Vol. 8, No. 6. pp. 417-420.

Bibtex

@article{357da62ac7704a1ea6856f1663317f76,
title = "Gigahertz quantized charge pumping in graphene quantum dots",
abstract = "Single-electron pumps are set to revolutionize electrical metrology by enabling the ampere to be redefined in terms of the elementary charge of an electron(1). Pumps based on lithographically fixed tunnel barriers in mesoscopic metallic systems(2) and normal/superconducting hybrid turnstiles(3) can reach very small error rates, but only at megahertz pumping speeds that correspond to small currents of the order of picoamperes. Tunable barrier pumps in semiconductor structures are operated at gigahertz frequencies(1,4), but the theoretical treatment of the error rate is more complex and only approximate predictions are available(5). Here, we present a monolithic, fixed-barrier single-electron pump made entirely from graphene that performs at frequencies up to several gigahertz. Combined with the record-high accuracy of the quantum Hall effect(6) and proximity-induced Josephson junctions(7), quantized- current generation brings an all-graphene closure of the quantum metrological triangle within reach(8,9). Envisaged applications for graphene charge pumps outside quantum metrology include single-photon generation via electron-hole recombination in electrostatically doped bilayer graphene reservoirs(10), single Dirac fermion emission in relativistic electron quantum optics(11) and read-out of spin-based graphene qubits in quantum information processing(12).",
keywords = "SINGLE-ELECTRON PUMP, ACCURACY, JUNCTIONS",
author = "Connolly, {M. R.} and Chiu, {K. L.} and Giblin, {S. P.} and M. Kataoka and Fletcher, {J. D.} and C. Chua and Griffiths, {J. P.} and Jones, {G. A. C.} and Vladimir Falko and Smith, {C. G.} and Janssen, {T. J. B. M.}",
year = "2013",
month = jun,
doi = "10.1038/NNANO.2013.73",
language = "English",
volume = "8",
pages = "417--420",
journal = "Nature Nanotechnology",
issn = "1748-3387",
publisher = "Nature Publishing Group",
number = "6",

}

RIS

TY - JOUR

T1 - Gigahertz quantized charge pumping in graphene quantum dots

AU - Connolly, M. R.

AU - Chiu, K. L.

AU - Giblin, S. P.

AU - Kataoka, M.

AU - Fletcher, J. D.

AU - Chua, C.

AU - Griffiths, J. P.

AU - Jones, G. A. C.

AU - Falko, Vladimir

AU - Smith, C. G.

AU - Janssen, T. J. B. M.

PY - 2013/6

Y1 - 2013/6

N2 - Single-electron pumps are set to revolutionize electrical metrology by enabling the ampere to be redefined in terms of the elementary charge of an electron(1). Pumps based on lithographically fixed tunnel barriers in mesoscopic metallic systems(2) and normal/superconducting hybrid turnstiles(3) can reach very small error rates, but only at megahertz pumping speeds that correspond to small currents of the order of picoamperes. Tunable barrier pumps in semiconductor structures are operated at gigahertz frequencies(1,4), but the theoretical treatment of the error rate is more complex and only approximate predictions are available(5). Here, we present a monolithic, fixed-barrier single-electron pump made entirely from graphene that performs at frequencies up to several gigahertz. Combined with the record-high accuracy of the quantum Hall effect(6) and proximity-induced Josephson junctions(7), quantized- current generation brings an all-graphene closure of the quantum metrological triangle within reach(8,9). Envisaged applications for graphene charge pumps outside quantum metrology include single-photon generation via electron-hole recombination in electrostatically doped bilayer graphene reservoirs(10), single Dirac fermion emission in relativistic electron quantum optics(11) and read-out of spin-based graphene qubits in quantum information processing(12).

AB - Single-electron pumps are set to revolutionize electrical metrology by enabling the ampere to be redefined in terms of the elementary charge of an electron(1). Pumps based on lithographically fixed tunnel barriers in mesoscopic metallic systems(2) and normal/superconducting hybrid turnstiles(3) can reach very small error rates, but only at megahertz pumping speeds that correspond to small currents of the order of picoamperes. Tunable barrier pumps in semiconductor structures are operated at gigahertz frequencies(1,4), but the theoretical treatment of the error rate is more complex and only approximate predictions are available(5). Here, we present a monolithic, fixed-barrier single-electron pump made entirely from graphene that performs at frequencies up to several gigahertz. Combined with the record-high accuracy of the quantum Hall effect(6) and proximity-induced Josephson junctions(7), quantized- current generation brings an all-graphene closure of the quantum metrological triangle within reach(8,9). Envisaged applications for graphene charge pumps outside quantum metrology include single-photon generation via electron-hole recombination in electrostatically doped bilayer graphene reservoirs(10), single Dirac fermion emission in relativistic electron quantum optics(11) and read-out of spin-based graphene qubits in quantum information processing(12).

KW - SINGLE-ELECTRON PUMP

KW - ACCURACY

KW - JUNCTIONS

U2 - 10.1038/NNANO.2013.73

DO - 10.1038/NNANO.2013.73

M3 - Journal article

VL - 8

SP - 417

EP - 420

JO - Nature Nanotechnology

JF - Nature Nanotechnology

SN - 1748-3387

IS - 6

ER -