SILICON-GERMANIUM HETEROSTRUCTURES WITH SHEAR STRAIN AND GERMANIUM CONCENTRATION OSCILLATIONS FOR ENHANCED VALLEY SPLITTING
Inventors: Mark Friesen, Benjamin Woods, Mark Eriksson, Robert Joynt, Emily Joseph
Quantum dot qubits in Si/SiGe quantum wells are an attractive platform for quantum computation due to their long coherence times, fast gate operations, nuclear-spin free isotopes, and compatibility with the microelectronics industry.
UW-Madison researchers have designed semiconductor heterostructures having Ge-seeded, shear-strained silicon quantum wells for enhanced valley-splitting. They have also designed gate-controlled qubits based on the heterostructures and quantum computing systems based on the qubits.