Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements

Research output: Contribution to journalJournal articlepeer-review

Standard

Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements. / Chatterjee, Anasua; Ansaloni, Fabio; Rasmussen, Torbjorn; Brovang, Bertram; Fedele, Federico; Bohuslavskyi, Heorhii; Krause, Oswin; Kuemmeth, Ferdinand.

In: Physical Review Applied, Vol. 18, No. 6, 064040, 14.12.2022.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Chatterjee, A, Ansaloni, F, Rasmussen, T, Brovang, B, Fedele, F, Bohuslavskyi, H, Krause, O & Kuemmeth, F 2022, 'Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements', Physical Review Applied, vol. 18, no. 6, 064040. https://doi.org/10.1103/PhysRevApplied.18.064040

APA

Chatterjee, A., Ansaloni, F., Rasmussen, T., Brovang, B., Fedele, F., Bohuslavskyi, H., Krause, O., & Kuemmeth, F. (2022). Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements. Physical Review Applied, 18(6), [064040]. https://doi.org/10.1103/PhysRevApplied.18.064040

Vancouver

Chatterjee A, Ansaloni F, Rasmussen T, Brovang B, Fedele F, Bohuslavskyi H et al. Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements. Physical Review Applied. 2022 Dec 14;18(6). 064040. https://doi.org/10.1103/PhysRevApplied.18.064040

Author

Chatterjee, Anasua ; Ansaloni, Fabio ; Rasmussen, Torbjorn ; Brovang, Bertram ; Fedele, Federico ; Bohuslavskyi, Heorhii ; Krause, Oswin ; Kuemmeth, Ferdinand. / Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements. In: Physical Review Applied. 2022 ; Vol. 18, No. 6.

Bibtex

@article{88fb55967273402b9db1c8f91dc1f452,
title = "Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements",
abstract = "Quantum dot arrays possess ground states governed by Coulomb energies, utilized prominently by singly occupied quantum dots, each implementing a spin qubit. For such quantum processors, the con-trolled transitions between ground states are of operational significance, as these allow the control of quantum information within the array such as qubit initialization and entangling gates. For few-dot arrays, ground states are traditionally mapped out by performing dense raster-scan measurements in control -voltage space. These become impractical for larger arrays due to the large number of measurements needed to sample the high-dimensional gate-voltage hypercube and the comparatively little information extracted. We develop a hardware-triggered detection method based on reflectometry, to acquire measure-ments directly corresponding to transitions between ground states. These measurements are distributed sparsely within the high-dimensional voltage space by executing line searches proposed by a learning algorithm. Our autonomous software-hardware algorithm accurately estimates the polytope of Coulomb blockade boundaries, experimentally demonstrated in a 2 x 2 array of silicon quantum dots.",
author = "Anasua Chatterjee and Fabio Ansaloni and Torbjorn Rasmussen and Bertram Brovang and Federico Fedele and Heorhii Bohuslavskyi and Oswin Krause and Ferdinand Kuemmeth",
year = "2022",
month = dec,
day = "14",
doi = "10.1103/PhysRevApplied.18.064040",
language = "English",
volume = "18",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "6",

}

RIS

TY - JOUR

T1 - Autonomous Estimation of High-Dimensional Coulomb Diamonds from Sparse Measurements

AU - Chatterjee, Anasua

AU - Ansaloni, Fabio

AU - Rasmussen, Torbjorn

AU - Brovang, Bertram

AU - Fedele, Federico

AU - Bohuslavskyi, Heorhii

AU - Krause, Oswin

AU - Kuemmeth, Ferdinand

PY - 2022/12/14

Y1 - 2022/12/14

N2 - Quantum dot arrays possess ground states governed by Coulomb energies, utilized prominently by singly occupied quantum dots, each implementing a spin qubit. For such quantum processors, the con-trolled transitions between ground states are of operational significance, as these allow the control of quantum information within the array such as qubit initialization and entangling gates. For few-dot arrays, ground states are traditionally mapped out by performing dense raster-scan measurements in control -voltage space. These become impractical for larger arrays due to the large number of measurements needed to sample the high-dimensional gate-voltage hypercube and the comparatively little information extracted. We develop a hardware-triggered detection method based on reflectometry, to acquire measure-ments directly corresponding to transitions between ground states. These measurements are distributed sparsely within the high-dimensional voltage space by executing line searches proposed by a learning algorithm. Our autonomous software-hardware algorithm accurately estimates the polytope of Coulomb blockade boundaries, experimentally demonstrated in a 2 x 2 array of silicon quantum dots.

AB - Quantum dot arrays possess ground states governed by Coulomb energies, utilized prominently by singly occupied quantum dots, each implementing a spin qubit. For such quantum processors, the con-trolled transitions between ground states are of operational significance, as these allow the control of quantum information within the array such as qubit initialization and entangling gates. For few-dot arrays, ground states are traditionally mapped out by performing dense raster-scan measurements in control -voltage space. These become impractical for larger arrays due to the large number of measurements needed to sample the high-dimensional gate-voltage hypercube and the comparatively little information extracted. We develop a hardware-triggered detection method based on reflectometry, to acquire measure-ments directly corresponding to transitions between ground states. These measurements are distributed sparsely within the high-dimensional voltage space by executing line searches proposed by a learning algorithm. Our autonomous software-hardware algorithm accurately estimates the polytope of Coulomb blockade boundaries, experimentally demonstrated in a 2 x 2 array of silicon quantum dots.

U2 - 10.1103/PhysRevApplied.18.064040

DO - 10.1103/PhysRevApplied.18.064040

M3 - Journal article

VL - 18

JO - Physical Review Applied

JF - Physical Review Applied

SN - 2331-7019

IS - 6

M1 - 064040

ER -

ID: 332676859