The coherent control of interacting spins in semiconductor quantum dots is of strong interest
for quantum information processing and for studying quantum magnetism from the bottom …

We demonstrate microwave measurements of the Andreev-bound-state (ABS) spectrum in
planar Josephson junctions (JJs) defined in Ge high-mobility two-dimensional hole gases …

Optical illumination of quantum dot qubit devices at cryogenic temperatures, while not well
studied, is often used to recover operating conditions after undesired shocking events or …

Silicon has been a core material for digital computing owing to its high mobility, stability
oxide interface, mature manufacturing technologies for more than half a century. While …

Planar semiconductor heterostructures offer versatile device designs and are promising
candidates for scalable quantum computing. Notably, heterostructures based on strained …

The scalability of spin-qubit devices is conditioned by qubit-to-qubit variability. Disorder in
the host materials indeed affects the wave functions of the confined carriers, which leads to …

The dephasing time of spin-orbit qubits is limited by the coupling with electrical and charge
noise. However, there may exist “dephasing sweet spots” where the qubit decouples (to first …

Nanofabricated metal gate electrodes are commonly used to confine and control electrons in
electrostatically defined quantum dots. However, these same gates impart a complicated …

The heavy-holes in Ge/GeSi heterostructures show highly anisotropic gyromagnetic
response with in-plane $ g $-factors $ g_ {x, y}^*\lesssim 0.3$ and out-of-plane $ g $-factor …

With increasing importance of germanium (Ge) for semiconductor quantum technologies, the
necessity of growing defect-free Ge films has become crucial. Here, Ge homoepitaxial …