Bulletin of the American Physical Society
APS March Meeting 2024
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session S46: Spin Qubit Arrays
8:00 AM–10:48 AM,
Thursday, March 7, 2024
Room: 200AB
Sponsoring
Units:
DQI DCMP GMAG
Chair: Andrey Kiselev, HRL Laboratories, LLC
Abstract: S46.00002 : A 2x2 Quantum Processor in 28Si/SiGe
8:12 AM–8:24 AM
Presenter:
Florian K Unseld
(QuTech)
Authors:
Florian K Unseld
(QuTech)
Brennan Undseth
(QuTech and the Kavli Institute of Nanoscience, Delft Univers)
Oriol Pietx-Casas
(QuTech)
Marcel Meyer
(Delft University of Technology)
Saurabh Karwal
(TNO/QuTech)
Sergey V Amitonov
(QuTech and Netherlands Organization for)
Amir Sammak
(TNO/QuTech)
Giordano Scappucci
(TU Delft QuTech)
Menno Veldhorst
(Delft University of Technology)
Lieven M Vandersypen
(Delft University of Technology)
We present control over a 4-qubit device in a square 2x2 configuration. The device is based on a 28Si/SiGe heterostructure, with each quantum dot tuned to the single electron regime. Utilizing an on-chip micro magnet we selectively drive single-qubit rotations using resonant microwave bursts. Dedicated barrier gates between neighboring quantum dots allow us to implement two-qubit gates between qubits while staying at the noise-resilient symmetry point. Finally, we will present the latest experimental results on crosstalk effects and small-scale algorithms realized in this device.
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