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Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot

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Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot. / Mavalankar, A; Pei, T; Gauger, E M et al.
In: Physical review B, Vol. 93, No. 23, 235428, 15.06.2016.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Mavalankar, A, Pei, T, Gauger, EM, Warner, JH, Briggs, GAD & Laird, EA 2016, 'Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot', Physical review B, vol. 93, no. 23, 235428. https://doi.org/10.1103/PhysRevB.93.235428

APA

Mavalankar, A., Pei, T., Gauger, E. M., Warner, J. H., Briggs, G. A. D., & Laird, E. A. (2016). Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot. Physical review B, 93(23), Article 235428. https://doi.org/10.1103/PhysRevB.93.235428

Vancouver

Mavalankar A, Pei T, Gauger EM, Warner JH, Briggs GAD, Laird EA. Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot. Physical review B. 2016 Jun 15;93(23):235428. doi: 10.1103/PhysRevB.93.235428

Author

Mavalankar, A ; Pei, T ; Gauger, E M et al. / Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot. In: Physical review B. 2016 ; Vol. 93, No. 23.

Bibtex

@article{2709043078a14812800bf974bac216e5,
title = "Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot",
abstract = "We report microwave-driven photon-assisted tunneling in a suspended carbon nanotube double quantum dot. From the resonant linewidth at a temperature of 13 mK, the charge-dephasing time is determined to be 280 ± 30 ps. The linewidth is independent of driving frequency, but increases with increasing temperature. The moderate temperature dependence is inconsistent with expectations from electron-phonon coupling alone, but consistent with charge noise arising in the device. The extracted level of charge noise is comparable with that expected from previous measurements of a valley-spin qubit, where it was hypothesized to be the main cause of qubit decoherence. Our results suggest a possible route towards improved valley-spin qubits.",
author = "A Mavalankar and T Pei and Gauger, {E M} and Warner, {J H} and Briggs, {G A D} and Laird, {E A}",
note = "{\textcopyright}2016 American Physical Society",
year = "2016",
month = jun,
day = "15",
doi = "10.1103/PhysRevB.93.235428",
language = "English",
volume = "93",
journal = "Physical review B",
issn = "2469-9950",
publisher = "AMER PHYSICAL SOC",
number = "23",

}

RIS

TY - JOUR

T1 - Photon-assisted tunneling and charge dephasing in a carbon nanotube double quantum dot

AU - Mavalankar, A

AU - Pei, T

AU - Gauger, E M

AU - Warner, J H

AU - Briggs, G A D

AU - Laird, E A

N1 - ©2016 American Physical Society

PY - 2016/6/15

Y1 - 2016/6/15

N2 - We report microwave-driven photon-assisted tunneling in a suspended carbon nanotube double quantum dot. From the resonant linewidth at a temperature of 13 mK, the charge-dephasing time is determined to be 280 ± 30 ps. The linewidth is independent of driving frequency, but increases with increasing temperature. The moderate temperature dependence is inconsistent with expectations from electron-phonon coupling alone, but consistent with charge noise arising in the device. The extracted level of charge noise is comparable with that expected from previous measurements of a valley-spin qubit, where it was hypothesized to be the main cause of qubit decoherence. Our results suggest a possible route towards improved valley-spin qubits.

AB - We report microwave-driven photon-assisted tunneling in a suspended carbon nanotube double quantum dot. From the resonant linewidth at a temperature of 13 mK, the charge-dephasing time is determined to be 280 ± 30 ps. The linewidth is independent of driving frequency, but increases with increasing temperature. The moderate temperature dependence is inconsistent with expectations from electron-phonon coupling alone, but consistent with charge noise arising in the device. The extracted level of charge noise is comparable with that expected from previous measurements of a valley-spin qubit, where it was hypothesized to be the main cause of qubit decoherence. Our results suggest a possible route towards improved valley-spin qubits.

U2 - 10.1103/PhysRevB.93.235428

DO - 10.1103/PhysRevB.93.235428

M3 - Journal article

VL - 93

JO - Physical review B

JF - Physical review B

SN - 2469-9950

IS - 23

M1 - 235428

ER -