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Posts Tagged ‘Quantum’

Quantum Computing Demands a Whole New Kind of Programmer

Posted by Venkatt Guhesan on May 10, 2017

Quantum computers finally seem to be coming of age with promises of “quantum supremacy” by the end of the year. But there’s a problem—very few people know how to work them. The bold claim of achieving “quantum supremacy” came on the back of Google unveiling a new quantum chip design. The hyperbolic phrase essentially means building a quantum device that can perform a calculation impossible for any conventional computer.

The technology has a major challenge to overcome. Programming these devices is much harder than programming conventional computers.

For a start, building algorithms for these machines requires a certain level of understanding about the quantum physics that gives qubits their special properties. While you don’t need an advanced physics degree to get your head around it, it is a big departure from traditional computer programming.

Source: Quantum Computing Demands a Whole New Kind of Programmer

Posted in General, In the News, Programming, Science and Technology | Tagged: , , | Leave a Comment »

Nanofridge could keep quantum computers cool enough to calculate

Posted by Venkatt Guhesan on May 10, 2017

Quantum computers need to be kept cool, just like regular computers, but an ordinary fan won’t cut it. A nanofridge that sorts electrons by temperature just might keep it cool enough to allow quantum compute.

Classical computers require built-in fans and other ways to dissipate heat, and quantum computers are no different. Instead of working with bits of information that can be either 0 or 1, as in a classical machine, a quantum computer relies on “qubits”, which can be in both states simultaneously – called a superposition – thanks to the quirks of quantum mechanics. Those qubits must be shielded from all external noise, since the slightest interference will destroy the superposition, resulting in calculation errors. Well-isolated qubits heat up easily, so keeping them cool is a challenge.

Over time the process has a selective chilling effect on the electrons as well: the hotter electrons jump the gap, while the cooler ones are left behind. The process removes heat from the system, much like how a refrigerator functions.

Source: Nanofridge could keep quantum computers cool enough to calculate | New Scientist

Posted in General, In the News, Inspirational, Science and Technology | Tagged: , , , | Leave a Comment »