Michelle Y. Simmons

Quantum Computing in Silicon with Donors   

Centre of Excellence for Quantum Computation and Communication Technology, University of New South Wales, Sydney    

Down-scaling has been the leading paradigm of the semiconductor industry since the invention of the first transistor in 1947. However miniaturization will soon reach the ultimate limit of single atoms leading to intensified research in alternative approaches for creating logic devices. This talk will outline ongoing developments in the fabrication of an atomic-scale quantum computer in silicon using scanning tunneling microscope hydrogen lithography to precisely position individual P donors in a Si crystal aligned with nanoscale precision to local control gates.  The talk will introduce how we can initialize, manipulate, and read-out the spin states of individual electrons focussing on recent results in coupled donor systems and novel approaches to scale up using rf reflectometry and 3D architectures for demonstrating the surface code.