18–23 Aug 2014
Nordita, Stockholm
Europe/Stockholm timezone

Quantum computing and the limits of silicon miniaturisation

18 Aug 2014, 09:15
45m
Svedbergsalen (FD5) (Nordita, Stockholm)

Svedbergsalen (FD5)

Nordita, Stockholm

Speaker

Prof. Michelle Simmons (University of New South Wales, Australia)

Description

Abstract: 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, set by the discreteness of matter, leading to intensified research in alternative approaches for creating logic devices. One of the most exciting of these is quantum computation. We will present devices that address the ultimate limit of device miniaturization in silicon where we have patterned dopants in a crystalline environment with atomic precision to act as one-dimensional leads, single- electron transistors and control gates. In particular we demonstrate precision-single-atom transistors, spin-read- out in a scalable silicon quantum computing architecture and a direct measurement of exchange coupling in donor based systems. We will discuss the benefits of donors as qubits and address some of the challenges to achieving truly atomically precise devices in all three spatial dimensions.

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