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PhD

University of Wisconsin-Madison

physics

advisors: Mark Friesen and Susan Coppersmith

thesis: Alloy Disorder, Valley Splitting, and Shuttling for Spin Qubits in Silicon/Silicon-Germanium Heterostructures. ProQuest link.

BA

Dartmouth College

majors: physics, computer science. minor: German studies

Strategies for Enhancing Spin-Shuttling Fidelities in Si/SiGe Quantum Wells with Random-Alloy Disorder

PRX Quantum

We show that valley excitation poses a challenge for conveyor mode electron shuttling in silicon, and we propose several mechanisms to avoid it.

Practical strategies for enhancing the valley splitting in Si/SiGe quantum wells

Physical Review B

We analyze various strategies proposed to boost the valley splitting in Si quantum dots.

SiGe quantum wells with oscillating Ge concentrations for quantum dot qubits

Nature Communications

We propose a mechanism to boost the valley splitting in Si quantum dots using an oscillating concentration of germanium in the quantum well.

Atomic fluctuations lifting the energy degeneracy in Si/SiGe quantum dots

Nature Communications

We demonstrate that alloy disorder leads to large fluctuations in the valley splitting in silicon quantum dots, and we propose schemes to increase the valley splitting using this effect.