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Silicon has many attractive properties for quantum computing, and the quantum dot architecture is appealing because of its controllability and scalability. However, the multiple valleys in the… (More)
We report the fabrication and electrical characterization of a single electron transistor in a modulation doped silicon/silicon–germanium heterostructure. The quantum dot is fabricated by electron… (More)
We discuss pulsed electron spin resonance measurements of electrons in Si and determine the spin coherence from the decay of the spin echo signals. Tightly bound donor electrons in isotopically… (More)
Silicon quantum devices have progressed rapidly over the past decade, driven by recent interest in spintronics and quantum computing. Spin coherence has emerged as a leading indicator of suitable… (More)
Using picosecond millimetre-wave impulses we probe the electronic structure and dynamics of electrons in a single quantum dot—the artificial atom—which is essential for understanding their… (More)