Nov 10, 2017

IBM's quantum computer reaches 50-qubit milestone

Part of the cooling system used in IBM's 50-qubit quantum computer. Photo: IBM Research / Flick

IBM announced on Friday it has built a prototype 50 quantum bit (qubit) computer — the number some researchers think is needed to establish "quantum supremacy" over traditional computers. The company said its cloud computing platform will also be upgrading to a 20-qubit computer by the end of 2017.

Why it matters: Today's supercomputers are on processing par with quantum computers operating with less than 50 qubits. But quantum processors with more than 50 quantum bits are thought to be able to perform simulations and calculations that traditional computers cannot. IBM's previous version used 17 qubits.

How it works: Standard computers store information as a 0 or a 1. Quantum versions can represent it as 0, 1 or both at the same time, which gives them more processing power that could be useful for particular types of calculations.

Yes, but: It isn't ready for practical use. The quantum state lasts a mere 90 microseconds. And, the University of Maryland's Andrew Childs tells MIT Technology Review, it isn't just about the quantity of qubits but also quality. "Those qubits might be noisy, and there could be issues with how well connected they are."

Keep in mind: Quantum computers are well-suited for solving some problems — simulating chemical interactions at the subatomic level or optimizing supply chains, for example — but not necessarily everyday tasks.

Other players: Google, Intel, and a company called Rigetti are all working on quantum computing.

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Trump to install loyalist Ric Grenell as acting intelligence chief

Photo: Sylvain Gaboury/Patrick McMullan via Getty Images

President Trump confirmed in a tweet Wednesday night that he will install Richard Grenell, the current U.S. ambassador to Germany and a staunch defender of the president, as the acting director of national intelligence.

Why it matters: The role, which was originally vacated by Dan Coats in August 2019, is one of grave responsibility. As acting DNI, Grenell will be charged with overseeing and integrating the U.S. intelligence community and will advise the president and the National Security Council on intelligence matters that concern national security.

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What to watch in the Nevada debate

Photo Illustration: Eniola Odetunde/Axios. Photos: Cengiz Yardages and Mario Tama/Getty Images

Michael Bloomberg's wealth will fuel rather than shield him from tests and attacks when he makes his Democratic primary debate debut on the stage tonight in Las Vegas.

The state of play: Bernie Sanders is still the front-runner. So the other candidates must weigh which of the two presents a bigger threat to their viability: Sanders, with his combined delegate, polling and grassroots momentum? Or Bloomberg, with his bottomless budget?

Go deeperArrowUpdated 18 mins ago - Politics & Policy

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