3 papers
quant-ph2020
Progress Towards a Capacitively Mediated CNOT Between Two Charge Qubits in Si/SiGe
E. R. MacQuarrie, Samuel F. Neyens, J. P. Dodson +8
Fast operations, an easily tunable Hamiltonian, and a straightforward two-qubit interaction make charge qubits a useful tool for benchmarking device performance and exploring two-q…
quant-ph2019
Measurements of capacitive coupling within a quadruple quantum dot array
Samuel F. Neyens, E. R. MacQuarrie, J. P. Dodson +9
We present measurements of the capacitive coupling energy and the inter-dot capacitances in a linear quadruple quantum dot array in undoped Si/SiGe. With the device tuned to a regi…
cond-mat.mes-hall2018
The critical role of substrate disorder in valley splitting in Si quantum wells
Samuel F. Neyens, Ryan H. Foote, Brandur Thorgrimsson +11
Motivated by theoretical predictions that spatially complex concentration modulations of Si and Ge can increase the valley splitting in quantum wells, we grow and characterize Si/S…