Bulletin of the American Physical Society
2024 APS March Meeting
Monday–Friday, March 4–8, 2024; Minneapolis & Virtual
Session W46: Silicon Qubits IV - Characterization and Modeling
3:00 PM–5:48 PM,
Thursday, March 7, 2024
Room: 200AB
Sponsoring
Unit:
DQI
Chair: Felix Beaudoin, Nanoacademic Technologies inc
Abstract: W46.00009 : Reconfigurable quadruple quantum dot linear array with tunable couplings and dispersive sensing*
4:36 PM–4:48 PM
Presenter:
Kalid Ulas
(Univ of Cambridge)
Authors:
Kalid Ulas
(Univ of Cambridge)
Felix-Ekkehard von Horstig
(University of Cambridge, Quantum Motion)
Heimanu Niebojewski
(CEA-Leti, Univ. Grenoble Alpes)
M Fernando Gonzalez-Zalba
(Quantum Motion Technologies)
Thierry Ferrus
(Hitachi Cambridge Laboratory)
Charles Smith
(Hitachi Cambridge Laboratory, University of Cambridge)
Frederico Martins
(Hitachi Cambridge Laboratory)
The readout is performed using both DC measurement of the CMOS nanowire, as well as gate-based radio-frequency reflectometry readout. Two resonators, with superconducting spiral inductor and capacitor pairs designed in-house capable of delivering high quality factors, are connected to the dot gates to allow the reflectometry readout; the other two dot gates connect to microwave sources allowing pulses, suitable for real-time operation of the quantum dot.
*This research was supported by the European Union Horizon 2020 research and innovation program under Grant Agreement No. 951852 [Quantum Large Scale Integration in Silicon (QLSI)] and by the United Kingdom Engineering and Physical Sciences Research Council (EPSRC) PhD Studentship Award [USN 305174705].
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