UNSW Sydney-led research paves the way for large silicon-based quantum processors for real-world manufacturing and application.
Australian researchers have proven that near error-free quantum computing is possible, paving the way to build silicon-based quantum devices compatible with current semiconductor manufacturing technology.
“Today’s publication in Nature shows our operations were 99 per cent error-free,” says Professor Andrea Morello of UNSW, who led the work, with partners in the US, Japan, Egypt, UTS and the University of Melbourne.
“When the errors are so rare, it becomes possible to detect them and correct them when they occur. This shows that it is possible to build quantum computers that have enough scale, and enough power, to handle meaningful computation.
An atomic array in silicon paves the way for large scale devices
A University of Melbourne led team have perfected a technique for embedding single atoms in a silicon wafer one-by-one. Their technology offers the potential to make quantum computers using the same methods that have given us cheap and reliable conventional devices containing billions of transistors.
“We could ‘hear’ the electronic click as each atom dropped into one of 10,000 sites in our prototype device. Our vision is to use this technique to build a very, very large-scale quantum device,” says Professor David Jamieson of The University of Melbourne, lead author of the Advanced Materials paper describing the process.
A proof-of-concept published today in Nature promises warmer, cheaper and more robust quantum computing. And it can be manufactured using conventional silicon chip foundries.
Most quantum computers being developed around the world will
only work at fractions of a degree above absolute zero. That requires
multi-million-dollar refrigeration and as soon as you plug them into
conventional electronic circuits they’ll instantly overheat.
But now researchers led by Professor Andrew Dzurak at UNSW
Sydney have addressed this problem.
A French-Australian collaboration is setting out to make silicon quantum computing a practical reality.
“I’m excited by our technology because it has the potential to change the world,” says Professor Andrew Dzurak of the University of New South Wales, the quantum computing expert who leads the Australian side of the partnership.
Your smartphone’s Wi-Fi connections are fast and reliable thanks to the work of Australian astronomers in the 1990s.
Today, your phone is also being protected from cyberattacks by Australian software that works within the kernel of the phone’s operating system to protect it from hacking and software faults. The kernel is the most fundamental part of an operating system. It acts between the hardware and the applications.
Now Australian researchers are working to secure America’s growing fleets of autonomous machines, with ‘microkernel’ software known as seL4.
The new software is built on the work of researchers at the University of New South Wales and National ICT Australia (now CSIRO’s Data61 Group).
‘Perfect entanglement’ of two light beams has opened a major step towards highly secure quantum communication systems.
The University of Queensland’s Professor Tim Ralph and his colleagues from Canada and Russia have developed a technique to restore entangled light beams that have been distributed between distant points.
The design of a 3D silicon chip architecture clears another hurdle in the international race to build quantum computers.
Researchers at the University of Melbourne and the University of New South Wales (UNSW) have designed a chip based on single atom quantum bits, creating a blueprint for building a large-scale silicon quantum computer.
The development of a two-quantum bit (qubit) logic gate in silicon heralds the possibility of moving quantum computers from experimental lab to large-scale manufacture much faster than other global research efforts.
Scientia Professor Andrew Dzurak and his team have created a two-qubit gate – a critical component, which allows qubits to talk to each other and will form the basis for a quantum computer chip.
It’s an advance that the UK’s premier physics magazine, Physics World, declared one of the top 10 breakthroughs of 2015.
Across the world, the race is on to develop the first quantum computer and an Australia research centre is at the front of the pack.
The Australian Government, Telstra and the Commonwealth Bank of Australia have recently recognised the pole position of the ARC Centre of Excellence for Quantum Computation and Communication Technology (CQC2T) by investing $46 million towards a targeted goal of realising a 10-qubit quantum integrated circuit in silicon within the next five years.
In this feature we explore some of the Centre’s advances in quantum information research.