nickwinlund77 shares a report from SciTechDaily: UNSW Sydney-led research paves the way for large silicon-based quantum processors for real-world manufacturing and application. Australian researchers have proven that near error-free quantum computing is possible, paving the way to build silicon-based quantum devices compatible with current semiconductor manufacturing technology. […] [The researcher’s] paper is one of three published today in Nature that independently confirm that robust, reliable quantum computing in silicon is now a reality. This breakthrough is featured on the front cover of the journal.

[Professor Andrea Morello of UNSW, who led the work] et al achieved 1-qubit operation fidelities up to 99.95 percent, and 2-qubit fidelity of 99.37 percent with a three-qubit system comprising an electron and two phosphorous atoms, introduced in silicon via ion implantation. A Delft team in the Netherlands led by Lieven Vandersypen achieved 99.87 percent 1-qubit and 99.65 percent 2-qubit fidelities using electron spins in quantum dots formed in a stack of silicon and silicon-germanium alloy (Si/SiGe). A RIKEN team in Japan led by Seigo Tarucha similarly achieved 99.84 percent 1-qubit and 99.51 percent 2-qubit fidelities in a two-electron system using Si/SiGe quantum dots.

The UNSW and Delft teams certified the performance of their quantum processors using a sophisticated method called gate set tomography, developed at Sandia National Laboratories in the U.S. and made openly available to the research community. Morello had previously demonstrated that he could preserve quantum information in silicon for 35 seconds, due to the extreme isolation of nuclear spins from their environment. But the trade-off was that isolating the qubits made it seemingly impossible for them to interact with each other, as necessary to perform actual computations. Today’s paper describes how his team overcame this problem by using an electron encompassing two nuclei of phosphorus atoms. The three papers from the UNSW team, Delft team and RIKEN group in Tokyo can be found at their respective links.

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Source: Slashdot – Major Breakthrough As Quantum Computing In Silicon Hits 99% Accuracy

The Federal Reserve on Thursday released its long-awaited study of a digital dollar, exploring the pros and cons of the much-debated issue and soliciting public comment. CNBC reports: Billed as “the first step in a public discussion between the Federal Reserve and stakeholders about central bank digital currencies,” the 40-page paper (PDF) shies away from any conclusions about a central bank digital currency, or CBDC. The report originally was expected in the summer of 2021 but had been delayed. Instead, it provides an exhaustive look at benefits such as speeding up the electronic payments system at a time when financial transactions around the world already are highly digitized. Some of the downside issues the report discusses are financial stability risks and privacy protection while guarding against fraud and other illegal issues.

“A CBDC could fundamentally change the structure of the U.S. financial system, altering the roles and responsibilities of the private sector and the central bank,” the report says. One primary difference between the Fed’s dollar and other digital transactions is that current digital money is a liability of commercial banks, whereas the CBDC would be a Fed liability. Among other things, that would mean the Fed wouldn’t pay interest on money stored with it, though because it is riskless some depositors may prefer to keep their money with the central bank.

The paper lists a checklist of 22 different items for which it is soliciting public feedback. There will be a 120-day comment period. Fed officials say the report is the first step in an extensive process but there is no timetable on when it will be wrapped up. The paper released Thursday notes that the Fed’s “initial analysis suggests that a potential U.S. CBDC, if one were created, would best serve the needs of the United States by being privacy-protected, intermediated, widely transferable, and identity-verified.” However, the report also states that it “is not intended to advance a specific policy outcome and takes no position on the ultimate desirability of” the digital dollar. The report notes that the speed of the project is not a top priority. Instead, the authors of the report are focused on getting it right. “The introduction of a CBDC would represent a highly significant innovation in American money,” the report says. “Accordingly, broad consultation with the general public and key stakeholders is essential. This paper is the first step in such a conversation.”

The Fed also said that it will not proceed without a clear mandate from Congress, preferably in the form of “a specific authorizing law.”

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Source: Slashdot – Fed Releases Long-Awaited Study On a Digital Dollar

The FAA has announced that an “estimated 78 percent of the U.S. commercial fleet” have been cleared to land at airports with 5G C-band, even under low-visibility conditions. The Verge reports: The agency’s statement comes after a week of controversy surrounding the rollout of AT&T and Verizon’s upgraded cellular tech, which saw US airlines warning of “catastrophic disruption” to travel and shipping and some international airlines announcing they’d halt flights to some US airports. At issue are concerns that some radio altimeters won’t properly ignore signals from the new 5G transmitters. While there are precautions that should keep this from happening, including creating buffer zones around airports, an incorrect altimeter reading could cause real problems during a low-visibility landing.

Given the high stakes, the FAA has said that only planes with altimeters that it has tested and cleared will be allowed to land in sub-optimal conditions at airports where the new 5G tech has rolled out. […] On January 16th, the agency announced that it had cleared two altimeters, which it bumped up to five on Wednesday. It said the cleared altimeters were installed in “some” versions of planes like the Boeing 737, 747, and 777. The FAA changed that language on Thursday, saying that the 13 cleared altimeters should cover “all” Boeing 717, 737, 747, 757, 767, 777, 787, MD-10/-11, and Airbus A300, A310, A319, A320, A330, A340, A350, and A380 models. It also notes that “some” Embraer 170 and 190 regional jets are covered.

The FAA is still predicting that some altimeters won’t pass the test and will be “too susceptible to 5G interference.” Planes equipped with those models won’t be allowed to land at airports with the new 5G tech in low-visibility conditions — which could prevent airlines from scheduling any flights using those planes to airports of concern, given the unpredictability of weather and the disruption such a diversion would cause.

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Source: Slashdot – FAA Estimates 78% of US Planes Can Now Land At Airports With 5G C-Band

An anonymous reader quotes a report from The Washington Post: With its $68.7 billion acquisition of mammoth embattled video game publisher Activision Blizzard, Microsoft will be taking on a lot. It will be absorbing a company criticized by its employees for its workplace culture, one that is embroiled in lawsuits alleging gender-based discrimination and sexual harassment. Microsoft will also be taking on game development studios that have inched closer to unionization over the past several months. But it will also be adding an element that newly minted CEO of Microsoft Gaming Phil Spencer sees as core to Microsoft’s strategy for consumer acquisition: a slew of video games and long-abandoned franchises.

The games created by Activision Blizzard’s developers provide the centerpiece of Microsoft’s strategic thinking around the acquisition. The titles are some of the most popular in the world. And those Activision Blizzard properties extend well beyond Call of Duty, World of Warcraft and Candy Crush. In discussing some of the intellectual properties owned by Activision Blizzard, Spencer’s excitement may have mirrored the enthusiasm of a “StarCraft” player noticing the long-dormant franchise’s logo in Microsoft’s acquisition announcement. “I was looking at the IP list, I mean, let’s go!” Spencer said. ” ‘King’s Quest,’ ‘Guitar Hero,’ I should know this but I think they got ‘HeXen.’ ” “HeXen,” indeed an Activision Blizzard property, is a cult hit first-person game about using magic spells.

Microsoft’s pending acquisition of Activision Blizzard also means owning the rights to many creations from gaming’s past, including Crash Bandicoot, the original Sony PlayStation mascot. There’s also the influential and popular Tony Hawk skateboard series and beloved characters like Spyro the Dragon. Toys for Bob, one of the studios working under the Activision Blizzard banner, successfully launched games like “Crash Bandicoot 4: It’s About Time,” but was later folded into supporting Call of Duty games. Spencer said the Xbox team will talk with developers about working on a variety of franchises from the Activision Blizzard vaults. “We’re hoping that we’ll be able to work with them when the deal closes to make sure we have resources to work on franchises that I love from my childhood, and that the teams really want to get,” Spencer said. “I’m looking forward to these conversations. I really think it’s about adding resources and increasing capability.” Spencer said he’s concerned about tech companies unfamiliar with the gaming industry barging in to the space, as opposed to the current, experienced competition against Nintendo and Sony. “They have a long history in video games,” he said. “Nintendo’s not going to do anything that damages gaming in the long run because that’s the business they’re in. Sony is the same and I trust them. […] Valve’s the same way. When we look at the other big tech competitors for Microsoft: Google has search and Chrome, Amazon has shopping, Facebook has social, all these large-scale consumer businesses. […] The discussion we’ve had internally, where those things are important to those other tech companies for how many consumers they reach, gaming can be that for us.”

He added: “I think we do have a unique point of view, which is not about how everything has to run on a single device or platform. That’s been the real turning point for us looking at gaming as a consumer opportunity that could have similar impact on Microsoft that some of those other scale consumer businesses do for other big tech competitors. And it’s been great to see the support we’ve had from the company and the board.”

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Source: Slashdot – Xbox CEO Phil Spencer On Reviving Old Activision Games