University of Adelaide-led research has moved the world one step closer to reliable, high-performance quantum computing.
An international team has developed a ground-breaking single-electron “pump”. The electron pump device developed by the researchers can produce one billion electrons per second and uses quantum mechanics to control them one-by-one. And it’s so precise they have been able to use this device to measure the limitations of current electronics equipment.
This paves the way for future quantum information processing applications, including in defence, cybersecurity and encryption, and big data analysis.
“This research puts us one step closer to the holy grail – reliable, high-performance quantum computing,” says project leader Dr Giuseppe C. Tettamanzi, Senior Research Fellow, at the University of Adelaide’s Institute for Photonics and Advanced Sensing.
Published in the journal Nano Letters, the researchers also report observations of electron behaviour that’s never been seen before – a key finding for those around the world working on quantum computing.
“Quantum computing, or more broadly quantum information processing, will allow us to solve problems that just won’t be possible under classical computing systems,” says Dr Tettamanzi.
“It operates at a scale that’s close to an atom and, at this scale, normal physics goes out the window and quantum mechanics comes into play.
“To indicate its potential computational power, conventional computing works on instructions and data written in a series of 1s and 0s – think about it as a series of on and off switches; in quantum computing every possible value between 0 and 1 is available. We can then increase exponentially the number of calculations that can be done simultaneously.”
This University of Adelaide team, in collaboration with the University of Cambridge, Aalto University in Finland, University of New South Wales, and the University of Latvia, is working in an emerging field called electron quantum optics. This involves controlled preparation, manipulation and measurement of single electrons. Although a considerable amount of work has been devoted world-wide to understand electronic quantum transport, there is much still to be understood and achieved.
“Achieving full control of electrons in these nano-systems will be highly beneficial for realistic implementation of a scalable quantum computer. We, of course, have been controlling electrons for the past 150 years, ever since electricity was discovered. But, at this small scale, the old physics rules can be thrown out,” says Dr Tettamanzi.
“Our final goal is to provide a flow of electrons that’s reliable, continuous and consistent – and in this research, we’ve managed to move a big step towards realistic quantum computing.
“And, maybe equally exciting, along the way we have discovered new quantum effects never observed before, where, at specific frequencies, there is competition between different states for the capture of the same electrons. This observation will help advances in this game-changing field.”
The Latest on: Quantum computing
via Google News
The Latest on: Quantum computing
- It's time to protect the blockchain from quantum-enabled hackers on December 17, 2018 at 10:09 pm
Today, that conflict has echoes in the fierce debate between advocates of blockchain who believe it is secure, and those who think it could be broken by new quantum computers. Thanks to the much-laude... […]
- More than Just a Noise: How Sound Can Advance Quantum Computing on December 17, 2018 at 4:36 pm
Professor of Physics Madeline Msall is really into sound: not just the noise it makes, but the use of sound waves as a tool to measure and control electronic systems. Among the experiments she's been ... […]
- TSMC partners with Taiwan's Ministry of Science and Technology to create a quantum computer on December 17, 2018 at 1:24 pm
What just happened? The age of "blast processing" has come and gone, but the future of computing could be on its way sooner than you think. The Taiwan Semiconductor Manufacturing Company (TSMC), which ... […]
- 2019: America's Quantum Leap Year on December 17, 2018 at 12:06 pm
It was the year most Americans, including our government officials, realized that the quantum revolution, when superfast computers will use the principles of quantum physics to transform information t... […]
- VW Solves Quantum Chemistry Problems on a D-Wave Machine on December 17, 2018 at 11:00 am
Since at least 1982, when physicist Richard Feynman first proposed the idea of quantum computers, scientists have dreamed of using such exotic machines to simulate quantum phenomena in atoms and ... […]
- Ion-based commercial quantum computer is a first on December 17, 2018 at 8:43 am
Linear computation: montage of a photo of the chip containing the trapped ions and an image of the ions in a 1D array (Courtesy: Christopher Monroe) The first commercial quantum computer that uses tra... […]
- AT&T's John Donovan Visits Quantum Network Being Built with the California Institute of Technology on December 17, 2018 at 3:07 am
Eventually, the goal is to build a quantum internet that will connect quantum computers and devices across the world – much like the internet today connects "classical" devices. "Quantum ... […]
- A new type of quantum computer has smashed every record on December 16, 2018 at 4:36 am
Why it matters: As the quantum future looms closer, hundreds if not thousands of companies and research groups race towards constructing the first quantum computer that can outperform traditional supe... […]
- Quantum Computers Threaten the Web's Security. We Must Take Action Now. on December 16, 2018 at 1:09 am
Inside the stark and sweeping Eero Saarinen-styled exterior of the Thomas J. Watson Research Center in Yorktown Heights, IBM’s blue jeans-wearing boffins are assembling a new generation of super ... […]
via Bing News