Articles about quantum computing

Boffins show off speedy quantum CNOT gate - in silicon

German and American boffins have claimed a speed record for a quantum CNOT gate: 200 nanosecond operation, which would equate to 5 MHz clock speeds. Just as important, the researchers created the quantum CNOT* gate in silicon, in the form of electron spins controlled by microwave pulses. As this announcement from the …
Quantum blackboard

Microsoft asks devs for quantum leap of faith

Those without access to a quantum computer can console themselves with Microsoft's Quantum Development Kit, introduced as a preview release on Monday. Quantum computing has been around as as a plausible idea since the 1980s, based on earlier theoretical work on quantum information systems. But it would take until 2011 before …
Thomas Claburn, 11 Dec 2017

Today in non-depressing news: Boffins build biggest quantum sims

Two teams of researchers have created the world's largest publicly known quantum simulators – a type of quantum computer – each containing more than 50 qubits to model complex interactions between matter that cannot be performed with a conventional supercomputer. Quantum simulators are a restricted type of quantum computer …
Katyanna Quach, 30 Nov 2017
Bank vault

Quantum computers could crack Bitcoin, but fixes are available now

An international group of quantum boffins reckons Bitcoin could be broken by the year 2027. The researchers from Singapore, Australia and France say that scenario represents the worst case, and would see a quantum computer able to run Shor's algorithm against the cryptocurrency's protective elliptic curve signature quicker …
Intel's 17-qubit quantum chip

Look! Over there! Intel's cooked a 17-qubit chip quantum package

Intel reckons it's stolen a base in the race to build quantum chippery, by shipping a cryogenically-cooled 17-qubit chip to Netherlands-based QuTech. QuTech is Chipzilla's quantum research partner – QuZilla, so to speak. Regular readers of spooky-action-stories will know a qubit is a fragile creature, losing data if there's …

Japanese boffins try 'token passing' to scale quantum calculations

Apart from actually performing computations, one of the most difficult quantum computing challenges is getting qubits to scale. A Japanese team has published what it believes is a solution to the problem of scale. Quantum gates are complex creatures with many more components than their classical equivalents, so instead of …

Microsoft and Rambus will get schwifty in quantum-cum-cryogenic computation collab

Microsoft and Rambus have announced "an expanded collaboration" to develop prototype systems that can optimise memory performance at cryogenic temperatures. The pair first joined forces back in 2015 to investigate new computer architectures in anticipation of the Moore's Law apocalypse. The concern is that demand for realtime …
Venomous snake

Worry not, Python devs – you can program a quantum computer

Australia's Commonwealth Bank has bought a simulated quantum computer that you can program with Python. Yes, that Python – the scripting language created by Guido van Rossum, beloved of web developers and adapted into kiddie-coding tool Scratch. Python may appear an odd choice for a quantum computer, seeing as they're ever-so …
Simon Sharwood, 13 Apr 2017

IBM has cloud access to quantum computer 400 times smaller than D-Wave system

IBM says it will build commercially available quantum computing systems accessed through its cloud platform, but D-Wave has a claimed quantum computer 400 times bigger. Quantum computing has the promise of outperforming today's computers to an extraordinary degree at certain tasks such as factoring very large numbers. It uses …
Chris Mellor, 6 Mar 2017
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 …

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
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

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 …

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