Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits

Research output: Contribution to journalJournal articlepeer-review

Standard

Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits. / Fedele, Federico; Chatterjee, Anasua; Fallahi, Saeed; Gardner, Geoffrey C.; Manfra, Michael J.; Kuemmeth, Ferdinand.

In: PRX Quantum, Vol. 2, No. 4, 040306, 08.10.2021.

Research output: Contribution to journalJournal articlepeer-review

Harvard

Fedele, F, Chatterjee, A, Fallahi, S, Gardner, GC, Manfra, MJ & Kuemmeth, F 2021, 'Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits', PRX Quantum, vol. 2, no. 4, 040306. https://doi.org/10.1103/PRXQuantum.2.040306

APA

Fedele, F., Chatterjee, A., Fallahi, S., Gardner, G. C., Manfra, M. J., & Kuemmeth, F. (2021). Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits. PRX Quantum, 2(4), [040306]. https://doi.org/10.1103/PRXQuantum.2.040306

Vancouver

Fedele F, Chatterjee A, Fallahi S, Gardner GC, Manfra MJ, Kuemmeth F. Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits. PRX Quantum. 2021 Oct 8;2(4). 040306. https://doi.org/10.1103/PRXQuantum.2.040306

Author

Fedele, Federico ; Chatterjee, Anasua ; Fallahi, Saeed ; Gardner, Geoffrey C. ; Manfra, Michael J. ; Kuemmeth, Ferdinand. / Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits. In: PRX Quantum. 2021 ; Vol. 2, No. 4.

Bibtex

@article{e46a8846960046f3bab384f1b1ea5f8a,
title = "Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits",
abstract = "In many physical approaches to quantum computation, error-correction schemes assume the ability to form two-dimensional qubit arrays with nearest-neighbor couplings and parallel operations at multiple qubit sites. While semiconductor spin qubits exhibit long coherence times relative to their operation speed and single-qubit fidelities above error correction thresholds, multiqubit operations in two-dimensional arrays have been limited by fabrication, operation, and readout challenges. We present a two-by-two array of four singlet-triplet qubits in gallium arsenide and show simultaneous coherent operations and four-qubit measurements via exchange oscillations and frequency-multiplexed single-shot measurements. A larger multielectron quantum dot is fabricated in the center of the array as a tunable interqubit link, which we utilize to demonstrate coherent spin exchange with selected qubits. Our techniques are extensible to other materials, indicating a path towards quantum processors with gate-controlled spin qubits.",
keywords = "QUANTUM, GATE",
author = "Federico Fedele and Anasua Chatterjee and Saeed Fallahi and Gardner, {Geoffrey C.} and Manfra, {Michael J.} and Ferdinand Kuemmeth",
year = "2021",
month = oct,
day = "8",
doi = "10.1103/PRXQuantum.2.040306",
language = "English",
volume = "2",
journal = "PRX Quantum",
issn = "2691-3399",
publisher = "American Physical Society",
number = "4",

}

RIS

TY - JOUR

T1 - Simultaneous Operations in a Two-Dimensional Array of Singlet-Triplet Qubits

AU - Fedele, Federico

AU - Chatterjee, Anasua

AU - Fallahi, Saeed

AU - Gardner, Geoffrey C.

AU - Manfra, Michael J.

AU - Kuemmeth, Ferdinand

PY - 2021/10/8

Y1 - 2021/10/8

N2 - In many physical approaches to quantum computation, error-correction schemes assume the ability to form two-dimensional qubit arrays with nearest-neighbor couplings and parallel operations at multiple qubit sites. While semiconductor spin qubits exhibit long coherence times relative to their operation speed and single-qubit fidelities above error correction thresholds, multiqubit operations in two-dimensional arrays have been limited by fabrication, operation, and readout challenges. We present a two-by-two array of four singlet-triplet qubits in gallium arsenide and show simultaneous coherent operations and four-qubit measurements via exchange oscillations and frequency-multiplexed single-shot measurements. A larger multielectron quantum dot is fabricated in the center of the array as a tunable interqubit link, which we utilize to demonstrate coherent spin exchange with selected qubits. Our techniques are extensible to other materials, indicating a path towards quantum processors with gate-controlled spin qubits.

AB - In many physical approaches to quantum computation, error-correction schemes assume the ability to form two-dimensional qubit arrays with nearest-neighbor couplings and parallel operations at multiple qubit sites. While semiconductor spin qubits exhibit long coherence times relative to their operation speed and single-qubit fidelities above error correction thresholds, multiqubit operations in two-dimensional arrays have been limited by fabrication, operation, and readout challenges. We present a two-by-two array of four singlet-triplet qubits in gallium arsenide and show simultaneous coherent operations and four-qubit measurements via exchange oscillations and frequency-multiplexed single-shot measurements. A larger multielectron quantum dot is fabricated in the center of the array as a tunable interqubit link, which we utilize to demonstrate coherent spin exchange with selected qubits. Our techniques are extensible to other materials, indicating a path towards quantum processors with gate-controlled spin qubits.

KW - QUANTUM

KW - GATE

U2 - 10.1103/PRXQuantum.2.040306

DO - 10.1103/PRXQuantum.2.040306

M3 - Journal article

VL - 2

JO - PRX Quantum

JF - PRX Quantum

SN - 2691-3399

IS - 4

M1 - 040306

ER -

ID: 282529745