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Fast coherent manipulation of three-electron states in a double quantum dot

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

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Fast coherent manipulation of three-electron states in a double quantum dot. / Shi, Zhan; Simmons, C. B.; Ward, Daniel R. et al.
In: Nature Communications, Vol. 5, 3020, 06.01.2014.

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

Harvard

Shi, Z, Simmons, CB, Ward, DR, Prance, J, Wu, X, Koh, TS, Gamble, JK, Savage, DE, Lagally, MG, Friesen, M, Coppersmith, SN & Eriksson, MA 2014, 'Fast coherent manipulation of three-electron states in a double quantum dot', Nature Communications, vol. 5, 3020. https://doi.org/10.1038/ncomms4020

APA

Shi, Z., Simmons, C. B., Ward, D. R., Prance, J., Wu, X., Koh, T. S., Gamble, J. K., Savage, D. E., Lagally, M. G., Friesen, M., Coppersmith, S. N., & Eriksson, M. A. (2014). Fast coherent manipulation of three-electron states in a double quantum dot. Nature Communications, 5, Article 3020. https://doi.org/10.1038/ncomms4020

Vancouver

Shi Z, Simmons CB, Ward DR, Prance J, Wu X, Koh TS et al. Fast coherent manipulation of three-electron states in a double quantum dot. Nature Communications. 2014 Jan 6;5:3020. doi: 10.1038/ncomms4020

Author

Shi, Zhan ; Simmons, C. B. ; Ward, Daniel R. et al. / Fast coherent manipulation of three-electron states in a double quantum dot. In: Nature Communications. 2014 ; Vol. 5.

Bibtex

@article{2fa3891fed034adcb1414dbaef10bdbe,
title = "Fast coherent manipulation of three-electron states in a double quantum dot",
abstract = "An important goal in the manipulation of quantum systems is the achievement of many coherent oscillations within the characteristic dephasing time T2*. Most manipulations of electron spins in quantum dots have focused on the construction and control of two-state quantum systems, or qubits, in which each quantum dot is occupied by a single electron. Here we perform quantum manipulations on a system with three electrons per double quantum dot. We demonstrate that tailored pulse sequences can be used to induce coherent rotations between three-electron quantum states. Certain pulse sequences yield coherent oscillations fast enough that more than 100 oscillations are visible within a T2* time. The minimum oscillation frequency we observe is faster than 5 GHz. The presence of the third electron enables very fast rotations to all possible states, in contrast to the case when only two electrons are used, in which some rotations are slow.",
author = "Zhan Shi and Simmons, {C. B.} and Ward, {Daniel R.} and Jonathan Prance and Xian Wu and Koh, {Teck Seng} and Gamble, {John King} and Savage, {D. E.} and Lagally, {M. G.} and Mark Friesen and Coppersmith, {S. N.} and Eriksson, {M. A.}",
year = "2014",
month = jan,
day = "6",
doi = "10.1038/ncomms4020",
language = "English",
volume = "5",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Nature Publishing Group",

}

RIS

TY - JOUR

T1 - Fast coherent manipulation of three-electron states in a double quantum dot

AU - Shi, Zhan

AU - Simmons, C. B.

AU - Ward, Daniel R.

AU - Prance, Jonathan

AU - Wu, Xian

AU - Koh, Teck Seng

AU - Gamble, John King

AU - Savage, D. E.

AU - Lagally, M. G.

AU - Friesen, Mark

AU - Coppersmith, S. N.

AU - Eriksson, M. A.

PY - 2014/1/6

Y1 - 2014/1/6

N2 - An important goal in the manipulation of quantum systems is the achievement of many coherent oscillations within the characteristic dephasing time T2*. Most manipulations of electron spins in quantum dots have focused on the construction and control of two-state quantum systems, or qubits, in which each quantum dot is occupied by a single electron. Here we perform quantum manipulations on a system with three electrons per double quantum dot. We demonstrate that tailored pulse sequences can be used to induce coherent rotations between three-electron quantum states. Certain pulse sequences yield coherent oscillations fast enough that more than 100 oscillations are visible within a T2* time. The minimum oscillation frequency we observe is faster than 5 GHz. The presence of the third electron enables very fast rotations to all possible states, in contrast to the case when only two electrons are used, in which some rotations are slow.

AB - An important goal in the manipulation of quantum systems is the achievement of many coherent oscillations within the characteristic dephasing time T2*. Most manipulations of electron spins in quantum dots have focused on the construction and control of two-state quantum systems, or qubits, in which each quantum dot is occupied by a single electron. Here we perform quantum manipulations on a system with three electrons per double quantum dot. We demonstrate that tailored pulse sequences can be used to induce coherent rotations between three-electron quantum states. Certain pulse sequences yield coherent oscillations fast enough that more than 100 oscillations are visible within a T2* time. The minimum oscillation frequency we observe is faster than 5 GHz. The presence of the third electron enables very fast rotations to all possible states, in contrast to the case when only two electrons are used, in which some rotations are slow.

U2 - 10.1038/ncomms4020

DO - 10.1038/ncomms4020

M3 - Journal article

VL - 5

JO - Nature Communications

JF - Nature Communications

SN - 2041-1723

M1 - 3020

ER -