Effective out-of-plane g factor in strained-Ge/SiGe quantum dots
Journal
Physical Review B
Journal Volume
106
Journal Issue
12
Date Issued
2022-09-15
Author(s)
Miller, Andrew J.
Hardy, Will J.
Luhman, Dwight R.
Brickson, Mitchell
Baczewski, Andrew
Liu, Chia You
Lilly, Michael P.
Lu, Tzu Ming
Abstract
Lithographic quantum dots in strained-Ge/SiGe have rapidly progressed from the realization of a single-hole quantum dot to multiqubit devices. We present a measurement of the out-of-plane g factor for a single-hole quantum dot in this material. This experiment avoids the strong orbital effects present in the higher p-like orbitals in this configuration and validates the expected g-factor anisotropy. The results are in good agreement with calculations of the g factor using the heavy- and light-hole spaces of the Luttinger Hamiltonian, showing strong tunability through both the B field and the charge state.
Subjects
ELECTRON; QUBITS; Physics - Mesoscopic Systems and Quantum Hall Effect; Physics - Mesoscopic Systems and Quantum Hall Effect
Publisher
AMER PHYSICAL SOC
Type
journal article