Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session N72: Semiconductor Qubits: Spin Qubit Measurement II
11:30 AM–2:18 PM,
Wednesday, March 8, 2023
Room: Room 406
Sponsoring
Unit:
DQI
Chair: Sophie Hermans, California Institute of Technology
Abstract: N72.00010 : Probing spin-orbit induced leakage mechanisms via electric dipole spin-resonance within Pauli spin-blockade towards efficient hole spin qubit control*
1:18 PM–1:30 PM
Presenter:
Joseph W Hillier
(University of New South Wales)
Authors:
Joseph W Hillier
(University of New South Wales)
Ik Kyeong Jin
(University of New South Wales)
Scott D Liles
(University of New South Wales)
Aaquib Shamim
(University of New South Wales)
Isaac Vorreiter
(University of New South Wales)
Roy Li
(IMEC)
Clement Godfrin
(IMEC)
Stefan Kubicek
(IMEC)
Kristiaan DeGreve
(IMEC)
Alex R Hamilton
(University of New South Wales)
In this work, we investigate the magnetic-field induced leakage current and g-factor dependence via EDSR of a hole double-QD MOS device within the weakly coupled (tunnel coupling ~ 1 µeV) Pauli-spin-blockade regime. Enhanced singlet-triplet state mixing as a result of spin-orbit coupling is observed to be highly directional with respect to an applied rotating field, yielding a variation in g-factors of more than 400% and a significant increase in leakage current based on orientation. As such, these results provide insight on the underlaying mechanisms which are crucial in understanding the role of spin-orbit coupling for hole spin qubit manipulation and readout.
*This work was funded by the Australian Research Council (DP200100147 and LP200100019) .
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