PhD Student Seminar - Three Dimensional Monolithic Control of Atomic-Scale Devices in Silicon
Friday 23rd October 2020
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Speaker: Matthew Donnelly
Title: Three Dimensional Monolithic Control of Atomic-Scale Devices in Silicon
Abstract: The spin of an electron bound to a phosphorus donor in silicon (Si:P) is a prototypical two-level quantum system proposed as a qubit for quantum computing. Fundamental operations (initialisation, read-out with single qubit and two qubit gates) required for using this system for quantum information processing have been demonstrated in the past decade, with attention now turning towards how to scale up this system to the large arrays needed to carry out practical quantum computations. A critical part of the solution to the scale-up challenge will be the use of all epitaxial three dimensional (3D) scanning tunnelling microscopy (STM) fabrication techniques. Such techniques will not only facilitate increased electrostatic control and tunability of the qubits but do so in a crystalline device environment with minimal charge noise in the device.