An anonymous reader quotes a report from Gizmodo: Researchers from two teams now working with Intel have reported advances in a new quantum computing architecture, called spin qubits, in a pair of papers out today. They're obviously not the full-purpose quantum computers of the future. But they've got a major selling point over other quantum computing designs. "We made these qubits in silicon chips, similar to what's used in classical computer processes," study author Thomas Watson from TU Delft in the Netherlands told me. "The hope is that by doing things this way, we can potentially scale up to larger numbers needed to perform useful quantum computing."

Today, a research group at TU Delft, called QuTech, announced that they'd successfully tested two "spin qubits." These qubits involve the interaction of two confined electrons in a silicon chip. Each electron has a property called spin, which sort of turns it into a tiny magnet, with two states: "up" and "down." The researchers control the electrons with actual cobalt magnets and microwave pulses. They measure the electron's spins by watching how nearby electric charges react to the trapped electrons' movements. Those researchers, now working in partnership with Intel, were able to perform some quantum algorithms, including the well-known Grover search algorithm (basically, they could search through a list of four things), according to their paper published today in Nature. Additionally, a team of physicists led by Jason Petta at Princeton reported in Nature that they were able to pair light particles, called photons, to corresponding electron spins. This just means that distant spin qubits might be able to talk to one another using photons, allowing for larger quantum computers. There are some advantages to these systems. "Present-day semiconductor technology could create these spin qubits, and they would be smaller than the superconducting chips used by IBM," reports Gizmodo. "Additionally, they stay quantum longer than other systems." The drawbacks include the fact that it's very difficult to measure the spins of these qubits, and even more difficult to get them to interact with each other. UC Berkeley postdoc Sydney Schreppler also mentioned that the qubbits needed to be really close to each other.

The heads of six top U.S. intelligence agencies told the Senate Intelligence Committee on Tuesday they would not advise Americans to use products or services from Chinese smartphone maker Huawei. "The six -- including the heads of the CIA, FBI, NSA and the director of national intelligence -- first expressed their distrust of Apple-rival Huawei and fellow Chinese telecom company ZTE in reference to public servants and state agencies," reports CNBC. From the report: "We're deeply concerned about the risks of allowing any company or entity that is beholden to foreign governments that don't share our values to gain positions of power inside our telecommunications networks," FBI Director Chris Wray testified. "That provides the capacity to exert pressure or control over our telecommunications infrastructure," Wray said. "It provides the capacity to maliciously modify or steal information. And it provides the capacity to conduct undetected espionage."

In a response, Huawei said that it "poses no greater cybersecurity risk than any ICT vendor." A spokesman said in a statement: "Huawei is aware of a range of U.S. government activities seemingly aimed at inhibiting Huawei's business in the U.S. market. Huawei is trusted by governments and customers in 170 countries worldwide and poses no greater cybersecurity risk than any ICT vendor, sharing as we do common global supply chains and production capabilities."

Apple's new smart speakers can discolour wooden surfaces, leaving a white mark where they are placed, the firm has acknowledged. From a report: The US company has suggested that owners may have to re-oil furniture if the HomePod is moved. The device went on sale last week after having been delayed from its original 2017 release date. Apple told Pocket-lint that it was "not unusual" for speakers with silicone bases to leave a "mild mark." But the gadget review site told the BBC it had never seen anything like this problem. The website's founder, Stuart Miles, told the BBC that a speaker left a mark on his kitchen worktop within 20 minutes.

Scientists listening out for broadcasts by extra-terrestrials are struggling to get the computer hardware they need, thanks to the crypto-currency mining craze, a radio-astronomer has said. From a report: Seti (Search for Extraterrestrial Intelligence) researchers want to expand operations at two observatories. However, they have found that key computer chips are in short supply. "We'd like to use the latest GPUs [graphics processing units]... and we can't get 'em," said Dan Werthimer. Demand for GPUs has soared recently thanks to crypto-currency mining. "That's limiting our search for extra-terrestrials, to try to answer the question, 'Are we alone? Is there anybody out there?'," Dr Werthimer told the BBC. "This is a new problem, it's only happened on orders we've been trying to make in the last couple of months."