Menu
Quantum computing is now a big step closer thanks to Australian breakthrough

Quantum computing is now a big step closer thanks to Australian breakthrough

For the first time ever, scientists have found a way to build a quantum Fredkin gate

Quantum computing is now within closer reach thanks to a major breakthrough in which scientists have demonstrated that a key building block can be assembled.

Quantum computers are based on atomic-scale quantum bits, or qubits, that can represent both 0 and 1 simultaneously, and they are expected to deliver huge performance gains over traditional computers. Realizing that potential, however, depends on the ability to build working quantum circuits.

That's where the Fredkin gate, also known as a controlled-SWAP gate, comes in. The quantum version of the classic Fredkin gate exchanges two qubits depending on the value of the third. It could be a key component of quantum circuitry, but because of the complexity involved, no one has ever managed to build one in the real world -- until now.

Whereas the Fredkin gate typically requires a circuit of five logic operations, researchers from Griffith University and the University of Queensland used the quantum entanglement of particles of light to implement the controlled-SWAP operation directly.

“Similar to building a huge wall out of lots of small bricks, large quantum circuits require very many logic gates to function," explained Raj Patel, a research fellow in Griffith's Center for Quantum Dynamics. "However, if larger bricks are used, the same wall could be built with far fewer bricks.”

Essentially, the scientists demonstrated how to build large quantum circuits directly, without having to use numerous small logic gates. That, in turn, puts real quantum computers within closer reach.

Scientists at Florida State University’s National High Magnetic Field Laboratory (MagLab) recently reported a breakthrough with similar promise by minimizing qubits' susceptibility to magnetic disturbances.

The new research was published last week in Science Advances.


Follow Us

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.

Tags AustraliaprocessorscpuCPUscomputersquantam computers

Featured

Slideshows

The making of an MSSP: a blueprint for growth in NZ

The making of an MSSP: a blueprint for growth in NZ

Partners are actively building out security practices and services to match, yet remain challenged by a lack of guidance in the market. This exclusive Reseller News Roundtable - in association with Sophos - assessed the making of an MSSP, outlining the blueprint for growth and how partners can differentiate in New Zealand.

The making of an MSSP: a blueprint for growth in NZ
Reseller News Platinum Club celebrates leading partners in 2018

Reseller News Platinum Club celebrates leading partners in 2018

The leading players of the New Zealand channel came together to celebrate a year of achievement at the inaugural Reseller News Platinum Club lunch in Auckland. Following the Reseller News Innovation Awards, Platinum Club provides a platform to showcase the top performing partners and start-ups of the past 12 months, with more than ​​50 organisations in the spotlight.​​​

Reseller News Platinum Club celebrates leading partners in 2018
Meet the top performing HP partners in NZ

Meet the top performing HP partners in NZ

HP has honoured its leading partners in New Zealand during 2018, following 12 months of growth through the local channel. Unveiled during the fourth running of the ceremony in Auckland, the awards recognise and celebrate excellence, growth, consistency and engagement of standout Kiwi partners.

Meet the top performing HP partners in NZ
Show Comments