Articles about quantum computing

Hensinger_Quantum_computer_design_part

UK prof claims to have first practical blueprint of a quantum computer

A professor at the University of Sussex says he has the first practical blueprint for a quantum computer capable of solving problems that could take billions of years for a classical computer to compute. Oh yeah? A quantum computer (QC) uses qubits instead of classic binary digits, and each qubit is in a quantum state between …
Chris Mellor, 13 Feb 2017
D-Wave chip

D-Wave goes public with open-source quantum-classical hybrid software

Want to fool around with some quantum-ish computing? D-Wave has open sourced a software tool that prepares optimisation problems to run on its hardware. You can think of the software, qbsolv, as a D-Wave-specific compiler: in the white paper it's posted along with the tool at GitHub, the company's Michael Booth, Steven …

Now for a really cool micro-drum solo: Boffins chill gizmo below quantum limit

Physicists working at the US National Institute of Standards and Technology (NIST) have developed a way to theoretically cool an object to absolute zero. This groundbreaking technique, detailed in Nature today, has been used to chill a vibrating aluminium membrane to 360 microKelvin, a temperature below the “quantum limit.” …
Katyanna Quach, 12 Jan 2017

NIST requests ideas for crypto that can survive quantum computers

The United States' National Institute of Standards and Technology has issued a “Notice and request for nominations for candidate post-quantum algorithms.” The Institute (NIST) has cottoned on to the fact that “If large-scale quantum computers are ever built, they will be able to break many of the public-key cryptosystems …
Simon Sharwood, 22 Dec 2016

How do you make a qubit 10 times as stable? Dress it up for work

Dressing qubits in an electromagnetic field can make them 10 times more stable and able to perform more calculations over time in future quantum computers, according to new research in Nature Nanotechnology. Qubits - or quantum bits - hold information in quantum computers just like bits do in conventional computers. Instead of …
Katyanna Quach, 18 Oct 2016
BOSS map of universe

SHA3-256 is quantum-proof, should last billions of years

Although it's reasonable to assume that a world with real quantum computers will ruin traditional asymmetric encryption, perhaps surprisingly hash functions might survive. That's the conclusion of a group of boffins led by Matthew Amy of Canada's University of Waterloo, in a paper at the International Association of …
Chilling the Delft silicon qubit

Intel-backed boffins demo long-lived silicon qubit

Bit by bit, the world gets closer to creating the quantum equivalent of a storage gate – a silicon-based qubit that can last long enough for general-purpose computing. If you want to use the superposition – the quantum property in which a gate can exist as 0 and 1 at the same time – for computation, it needs a usable “ …
drawing of live cat and cat skeleton

Quantum comms succeed over metro-scale fibre networks

Two groups both reported successfully teleporting state information across metro-scale fibre networks. A Chinese team is claiming a teleportation over a 30 km fibre in Haifei (the entanglement travelled nearly 16 km), while the University of Calgary used that city's fibre network to carry entanglement 6.2 km (preprint here). …
drawing of live cat and cat skeleton

MIT's chip fires frikkin' laser at qubits

MIT boffins reckon they've cracked one of the more difficult challenges of practical quantum computing – the miniaturisation of components. In a paper at Nature, the Karan Mehta, Colin Bruzewicz, Robert McConnell, Rajeev Ram, Jeremy Sage and John Chiaverini say they've printed an ion trap and optical waveguide together in a …

All you need for quantum computing at room temperature is some mothballs

Much of the current research on the development of a quantum computer involves work at very low temperatures. The challenge to make them more practical for everyday use is to make them work at room temperature. The breakthrough here came from the use of some everyday materials, with details published today in Nature …

Google tests its own quantum computer – both qubits of it

A couple of years ago, a quantum physicist suggested to Vulture South that one of the best uses for quantum computers might be to model reality. Now, Google reckons its boffins have done just that. Science wants to model quantum systems because they lie at the heart of reality. For example, chemistry – where Google has chosen …
A bottle of burned naphtalene

Oz boffins cook quantum computing out of mothballs

A Sydney University researcher has burned naphthalene to create a material that can hold quantum qubit information at room temperatures. While the world has both quantum storage and quantum gates, albeit at small scales, even performing a simple Boolean AND operation on qubits is best undertaken as close as you can get to 0 …

Boffins slap quantum dots on diamonds to create mutant nanomaterials

Researchers have found a new way to speed up the process of doping nanomaterials by adding quantum dots to tiny diamonds, which could advance electronics and quantum computing in the future, according to a paper published in Nature Communications. Nanomaterials have properties that are useful in electronics. Electrons travel …

IBM's quantum 'puter news proves Big Blue still doesn't get 'cloud'

In a troubling development today, IBM demonstrates it still hasn't quite grasped this cloud computing thing at all. Big Blue's boffins have built a quantum-computing processor featuring five superconducting qubits, and installed it in the IBM T.J. Watson Research Center in New York. IBM is now inviting people to request access …
Justin Trudeau

Canny Canadian PM schools snarky hack on quantum computing

Video The Canadian Prime Minister Justin Trudeau has humiliated a Canadian journalist who assumed he was clueless about quantum computing. Trudeau was attending a press conference at the Perimeter Institute for Theoretical Physics in Waterloo, Ontario to announce $50m in science funding. A reporter jokingly asked him to explain …
Iain Thomson, 15 Apr 2016
The quantum Fredkin gate

Three-bit quantum gate a step closer to universal quantum computer

Quantum research boffins in Australia have demonstrated one of computing's universal gates, the Fredkin gate, operating with qubits instead of bits. The Fredkin gate – described here at Wikipedia – is a reversible three-bit gate that can be used to construct AND, OR, XOR and NOT functions. If the first of the three bits is a 1 …
IBM Headquarters, Armonk, NY

IBM dispels the doubts and bags quantum computing funding deal

IBM has won funding from the US Intelligence Advanced Research Projects Activity (IARPA) programme to develop its quantum computer research, despite ongoing concerns about the technology's practical application. "We are at a turning point where quantum computing is moving beyond theory and experimentation to include …
Kat Hall, 9 Dec 2015
D-Wave chip

Google says its quantum computer is 100 million times faster than PC

Two years ago Google and NASA bought a D-Wave 2X quantum computing system and the Chocolate Factory has now pronounced itself very pleased with the results. "We found that for problem instances involving nearly 1000 binary variables, quantum annealing significantly outperforms its classical counterpart, simulated annealing. It …
Iain Thomson, 9 Dec 2015

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