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Japan Launches its First Homegrown Quantum Computer

Slashdot.org - Thu, 08/28/2025 - 02:00
Japan has launched its first entirely homegrown quantum computer, built with domestic superconducting qubits and components, and running on the country's own open-source software toolchain, OQTOPUS. "The system is now ready to take on workloads from its base at the University of Osaka's Center for Quantum Information and Quantum Biology (QIQB)," reports LiveScience. From the report: The system uses a quantum chip with superconducting qubits -- quantum bits derived from metals that exhibit zero electrical resistance when cooled to temperatures close to absolute zero (minus 459.67 degrees Fahrenheit, or minus 273.15 degrees Celsius). The quantum processing unit (QPU) was developed at the Japanese research institute RIKEN. Other components that make up the "chandelier" -- the main body of the quantum computer -- include the chip package, delivered by Seiken, the magnetic shield, infrared filters, bandpass filters, a low-noise amplifier and various cables. These are all housed in a dilution refrigerator (a specialized cryogenic device that cools the quantum computing components) to allow for those extremely low temperatures. It also comes alongside a pulse tube refrigerator (which again cools various components in use), controllers and a low-noise power source. OQTOPUS, meanwhile, is a collection of open-source tools that include everything required to run quantum programs. It includes the core engine and cloud module, as well as graphical user interface (GUI) elements, and is designed to be built on top of a QPU and quantum control hardware.

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With Starship Flight 10, SpaceX Prioritized Resilience Over Perfection

Slashdot.org - Wed, 08/27/2025 - 22:30
An anonymous reader quotes a report from TechCrunch: SpaceX has long marketed Starship as a fully and rapidly reusable rocket that's designed to deliver thousands of pounds of cargo to Mars and make life multiplanetary. But reusability at scale means a space vehicle that can tolerate mishaps and faults, so that a single failure doesn't spell a mission-ending catastrophe. The 10th test flight on Tuesday evening demonstrated SpaceX's focus on fault tolerance. In a post-flight update, SpaceX said the test stressed "the limits of vehicle capabilities." Understanding these edges will be critical for the company's plans to eventually use Starship to launch Starlink satellites, commercial payloads, and eventually astronauts. When the massive Starship rocket lifted off on its 10th test flight Tuesday evening, SpaceX did more than achieve new milestones. It purposefully introduced several faults to test the heat shield, propulsion redundancy, and the relighting of its Raptor engine. The heat shield is among the toughest engineering challenges facing SpaceX. As Elon Musk acknowledged on X in May 2024, a reusable orbital return heat shield is the "biggest remaining problem" to 100% rocket reusability. The belly of the upper stage, also called Starship, is covered in thousands of hexagonal ceramic and metallic tiles, which make up the heat shield. Flight 10 was all about learning how much damage the ship can accept and survive when it goes through atmospheric heating. During the tenth test, engineers intentionally removed tiles from some sections of the ship, and experimented with a new type of actively cooled tile, to gather real-world data and refine designs. [...] Propulsion redundancy was also put to the test. The Super Heavy booster's landing burn configuration appeared to be a rehearsal for engine failure. Engineers intentionally disabled one of the three center Raptor engines during the final phase of the burn and used a backup engine in its place. That was a successful rehearsal for an engine-out event. Finally, SpaceX reported the in-space relight of a Raptor engine, described on the launch broadcast as the second time SpaceX has pulled this off. Reliable engine restarts will be necessary for deep-space missions, propellant transfers, and possibly some payload deployment missions. [...] The next step is translating Flight 10 data into future hardware upgrades to move closer to routine operations and days when, as Musk envisioned, "Starship launches more than 24 times in 24 hours."

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It's Linux Time! - ofb.biz

Linux News - Wed, 08/27/2025 - 21:10
It's Linux Time!  ofb.biz
Categories: Linux

Developer Unlocks Newly Enshittified Echelon Exercise Bikes But Can't Legally Release Software

Slashdot.org - Wed, 08/27/2025 - 19:02
samleecole shares a report from 404 Media: An app developer has jailbroken Echelon exercise bikes to restore functionality that the company put behind a paywall last month, but copyright laws prevent him from being allowed to legally release it. Last month, Peloton competitor Echelon pushed a firmware update to its exercise equipment that forces its machines to connect to the company's servers in order to work properly. Echelon was popular in part because it was possible to connect Echelon bikes, treadmills, and rowing machines to free or cheap third-party apps and collect information like pedaling power, distance traveled, and other basic functionality that one might want from a piece of exercise equipment. With the new firmware update, the machines work only with constant internet access and getting anything beyond extremely basic functionality requires an Echelon subscription, which can cost hundreds of dollars a year. App engineer Ricky Witherspoon, who makes an app called SyncSpin that used to work with Echelon bikes, told 404 Media that he successfully restored offline functionality to Echelon equipment and won the Fulu Foundation bounty. But he and the foundation said that he cannot open source or release it because doing so would run afoul of Section 1201 of the Digital Millennium Copyright Act, the wide-ranging copyright law that in part governs reverse engineering. There are various exemptions to Section 1201, but most of them allow for jailbreaks like the one Witherspoon developed to only be used for personal use. [...] "I don't feel like going down a legal rabbit hole, so for now it's just about spreading awareness that this is possible, and that there's another example of egregious behavior from a company like this [...] if one day releasing this was made legal, I would absolutely open source this. I can legally talk about how I did this to a certain degree, and if someone else wants to do this, they can open source it if they want to."

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Silver State Goes Dark as Cyberattack Knocks Nevada Websites Offline

Slashdot.org - Wed, 08/27/2025 - 18:20
Nevada has been crippled by a cyberattack that began on August 24, taking down state websites, intermittently disabling phone lines, and forcing offices like the DMV to close. The Register reports: The Office of Governor Joseph Lombardo announced the attack via social media on Monday, saying that a "network security incident" took hold in the early hours of August 24. Official state websites remain unavailable, and Lombardo's office warned that phone lines will be intermittently down, although emergency services lines remain operational. State offices are also closed until further notice, including Department of Motor Vehicles (DMV) buildings. The state said any missed appointments will be honored on a walk-in basis. "The Office of the Governor and Governor's Technology Office (GTO) are working continuously with state, local, tribal, and federal partners to restore services safely," the announcement read. "GTO is using temporary routing and operational workarounds to maintain public access where it is feasible. Additionally, GTO is validating systems before returning them to normal operation and sharing updates as needed." Local media outlets are reporting that, further to the original announcement, state offices will remain closed on Tuesday after officials previously expected them to reopen. The state's new cybersecurity office says there is currently no evidence to suggest that any Nevadans' personal information was compromised during the attack.

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