From Silicon-based Quantum Devices to Diamond and the Bionic Eye and Some Germanium In Between: Ion Beam and Related Research at The University of Melbourne

Description
Ion implantation is being used to fabricate a variety of silicon-based quantum devices in the Centre for Quantum Computation and Communication Technology (CQC2T) in Australia [1]. Recent breakthroughs include coherent manipulation of an individual electron spin qubit bound to a phosphorus donor atom in natural silicon with single-shot read-out [2], single-shot read-out of the nuclear spin of a single 31P atom with very high readout fidelity and operation of the single nuclear spin as a qubit [3] and observation of the optical excitation of a single erbium atom implanted in the channel of a silicon transistor [4]. In other research, Bionic Vision Australia has a bold research strategy to develop a high-acuity retinal implant to bring sight to people with certain types of visual impairment in the hope of replicating the success of the cochlear implants that have helped so many people to hear. In this presentation I will describe some of the key results from the quantum device ! program, give an overview of the Bionic eye project and discuss other ion implantation related work at The University of Melbourne, including our work on germanium in collaboration with the Catania group. References: [1] J. C. McCallum, D. N. Jamieson, C. Yang, A. D. Alves, T. F. Hopf, S. C. Thompson and J. van Donkelaar, Single-Ion Implantation for the Development of Si-Based MOSFET Devices with Quantum Functionalities, ADVANCES IN MATERIALS SCIENCE AND ENGINEERING, 2012, 272694, (2011). [2] J. J Pla, K. Y. Tan, J. P. Dehollain, W. H. Lim, J. J. L. Morton, D. N. Jamieson, A. S. Dzurak, and A. Morello, Nature, 488, 541, (2013). [3] J. J. Pla, K. Y. Tan, J. P. Dehollain, W. H. Lim, J. J. L. Morton, F. A. Zwanenburg, D. N. Jamieson, A. S. Dzurak, and A. Morello, Nature, 496, 334, (2013). [4] C. Yin, M. Rancic, G. G. de Boo, N. Stavrias, J. C. McCallum, M. J. Sellars, and S. Rogge, Nature, 497, 91, (2013).