167 citations · 1.1k across the 39 of their papers we have counts for
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Statistical characterization of valley coupling in Si/SiGe quantum dots via -factor measurements near a valley vortex
Benjamin D. Woods, Merritt P. Losert, Nasir R. Elston +5
The presence of low-energy valley excitations in Si/SiGe heterostructures often causes spin qubits to fail. It is therefore important to develop robust protocols for characterizing…
g-factor theory of Si/SiGe quantum dots: spin-valley and giant renormalization effects
Benjamin D. Woods, Merritt P. Losert, Robert Joynt +1
Understanding the -factor physics of Si/SiGe quantum dots is crucial for realizing high-quality spin qubits. While previous work has explained some aspects of -factor physics…
Coupling conduction-band valleys in SiGe heterostructures via shear strain and Ge concentration oscillations
Benjamin D. Woods, Hudaiba Soomro, E. S. Joseph +4
Engineering conduction-band valley couplings is a key challenge for Si-based spin qubits. Recent work has shown that the most reliable method for enhancing valley couplings entails…
Practical Strategies for Enhancing the Valley Splitting in Si/SiGe Quantum Wells
Merritt P. Losert, M. A. Eriksson, Robert Joynt +4
Silicon/silicon-germanium heterostructures have many important advantages for hosting spin qubits. However, controlling the valley splitting (the energy splitting between the two l…
Spin-orbit enhancement in Si/SiGe heterostructures with oscillating Ge concentration
Benjamin D. Woods, M. A. Eriksson, Robert Joynt +1
We show that Ge concentration oscillations within the quantum well region of a Si/SiGe heterostructure can significantly enhance the spin-orbit coupling of the low-energy conductio…
Evolution with Magnetic Field of Discrete Scale Invariant Supercritical States in Graphene
Hailong Li, Haiwen Liu, Robert Joynt +1
We investigate the quasi-bound states of a Coulomb impurity in graphene in the presence of a magnetic field. \ These states exhibit the dramatic and rather rare property of discret…