1254th OGM and open lecture

 morello small “Quantum computers: how and why”

  Andrea Morello
  Professor of Quantum Engineering
  UNSW Sydney

Wednesday 5 July 2017
Union, University and Schools Club, 25 Bent Street, Sydney

The talk certainly lived up to its promise of giving an excellent insight into a subject that, for most of the audience, would be far removed from their professional knowledge and experience. Starting out with a simple demonstration of how quantum effects are size dependent, Andrea went on to describe some of the current realisations of quantum devices that can manipulate one bit of information – a qubit – and, in particular, the device pioneered by his group, which uses the coupling between the nuclear and electron spin of a phosphorus atom in silicon. However, a single qubit device is, in principle, functionally no different from a single memory cell in a normal silicon chip. The big difference between current computers and a quantum computer arises through the effect of entanglement, which allows N entangled qubits to be manipulated as a single entity with 2N states (a memory chip with N cells can also store any one of 2N different “words”, but such a word can only be changed bit by bit). The promise of enormously enhanced computing power is currently being pursued in a number of corporations, including Google, IBM, and Lockheed Martin, and here in Australia a consortium of Andrea’s group at UNSW, Telstra, and CBA, with Government support, is being created to stay in the race – the Royal Society of NSW wishes them lots of success. The great interest in Andrea’s presentation was demonstrated by the vigorous Q&A session that followed, which explored some of the challenges

By accepting you will be accessing a service provided by a third-party external to https://royalsoc.org.au/

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.