Mayorana 1: Microsoft ignites controversy with claims of new quantum computer launch

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Microsoft’s Majorana 1 Quantum Computer

John Brecher/Microsoft

Last month, Microsoft announced at Fanfare that it had created a new kind of problem and used it to create a quantum computer architecture that could lead to a machine. It can solve industrial-scale problems that have meaning over many years, not decades“.

But since then, the tech giant has been increasingly burning from researchers who say it’s not doing something of a kind. “My impression is that the response of the expert physics community is overwhelmingly negative. Personally, people are just furious.” Sergei Frolov at the University of Pittsburgh, Pennsylvania.

Microsoft’s claim is based on an elusive, exotic quasiparticle called Majorana Zero Modes (MZMS). These can theoretically be used to create topological kibits, new types of qubits, i.e. components of information processing within quantum computers. Due to their unique properties, such qubits can be excellent at reducing errors and can address the major drawbacks of all quantum computers used today.

MZM is theorized to emerge from the collective behavior of electrons at the edges of thin superconducting wires. Microsoft’s new Majorana 1 chip contains some such wires, and according to the company it contains enough MZM to create eight topological maize. A Microsoft spokesperson said New Scientist Chip was a “big breakthrough for us and the industry.”

However, researchers say Microsoft does not provide sufficient evidence to support these claims. In addition to the press release, the company published its paper in the journal Nature He said the results confirmed the results. ” Nature The papermark shows a peer-reviewed confirmation that not only did Microsoft have been able to create majorana particles, but it also helps protect quantum information from random interference, but also allows for reliable measurement of information from that information. A Microsoft press release said.

But the editor Nature It explicitly made it clear that this statement was incorrect. A published report on the Peer-Review process states, “The editorial team wants to point out that the results of this manuscript do not represent evidence of the existence of Majorana Zero Mode in the device on which it was reported.”

In other words, Microsoft and Nature They are directly contradictory to each other. “The press release says something completely different [than the Nature paper]” I say Henry Legg At St Andrews University, UK.

This is not just an unorthodox aspect of Microsoft’s papers. Legg points out that two of the four peer reviewers initially gave rather critical and negative feedback. The peer review report shows that by the final round of editing, one reviewer still opposed the publication of the paper, and three others registered with it. spokesman for Nature I said New Scientist The ultimate decision to publish it came down to the possibilities we saw for future experiments with MZM on Microsoft devices.

Also, one of the reviewers is rare. Hao Chang Legg says that at China’s University of Tsingea, previously collaborated on MICSOFT and MZM research. The work published in Nature In 2018, it was later withdrawn, and the team apologized, “.” Scientific rigor is insufficient” After other researchers have identified inconsistencies in the results. “That’s very shocking Nature You can choose the judge who retracted the paper just a few years ago,” says Legg.

Chang says there was no conflict of interest. “I wasn’t an employee at Microsoft either. [the firm]. Of the more than 100 authors of Microsoft Paper recently, I have worked with three before,” he says. “It was seven years ago, but back then they were Tu Delft students. [in the Netherlands]not an employee of Microsoft. “

Microsoft says the team wasn’t involved in the selection of reviewers and was not aware of Zhang’s participation until the review process was completed. Nature The decision was based on a spokesman who said, “The quality of the advice received can be seen from the reviewer’s comments.”

Looking at the issue, both Leg and Frolov are making more fundamental challenges to Microsoft’s methodology. Experiments using MZM have proven extremely difficult to perform over the past decades. This is because imperfections and obstacles within the device can produce false signals that mimic quasiparticles even if they are not present. This was a challenge for researchers related to Microsoft, including the withdrawn 2018 paper. The withdrawal notice explicitly refers to new insights into the impact of the failure. To address this, Microsoft has been working on 2023. The procedure has been published in the journal Physical Review b It was called the “Topology Gap Protocol” and claimed to tease these differences.

“The whole idea of this protocol was that it was a binary test of whether Mallorna is there,” says Legg. His Unique analysis of code and data However, Microsoft implemented the protocol in 2023, which showed that it was less reliable than expected and changing the format of the data is sufficient to turn the failure into a path. Legg says he raised these issues with Microsoft before its publication. Nature Paper, yet the company was using protocols in new research.

NatureA spokesman for the journal’s editorial team “are aware that some people are questioning the effectiveness of the topology gap protocol used.” Nature Paper and other publications. This was an issue that we were also aware of during the peer review process. “Through the process, the reviewer determined that this was not an important issue at the end of the day, the spokesman said.

Microsoft says it will respond to leg analysis of the 2023 paper. Physics Review B. “Criticism can be summarised as a leg that will build a false strooger for our paper and attack it,” said Microsoft’s Chetan Nayak. He challenged some points to Legg’s work, saying that the 2023 paper “showed that we can confidently create topology phases and Mayorana Zero modes,” and the new paper only strengthens those claims.

A Microsoft spokesperson said: Nature The paper was submitted for review and the company built on its confidence and not only created multi-kut chips, but also tested how to operate these kitz as needed for a working topological quantum computer. The company will release more details at the American Physics Society’s Global Physics Summit in March, the spokesman said. “We look forward to sharing our results and transforming our 20+ year vision of quantum computing into a concrete reality, along with the additional data behind science.”

But for Frolov, the assertion that incomplete results from the past can be ignored as the company is trying to build a more sophisticated device lies in false logic. Legg shares this view. “The fundamental issues of obstacles and materials science don’t go away just because we start manufacturing more fancy devices,” he says.

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Source: www.newscientist.com

Rocket engine prototype successfully ignites fuel in mid-flight

Testing self-eating rocket engine prototype

Buzdyk et al.

A rocket that eats itself may be on the way. To reach orbit, a rocket must lift its own mass, the mass of its propellant, and the payload it intends to carry into space. But if rockets could burn their own parts for fuel, they could free up capacity for more important scientific projects and for transporting supplies. A team of engineers has built his first prototype of one of these “autophage engines.”

The concept of a rocket that eats its own parts was first patented in 1938, but it was difficult to implement on the huge rockets on which most launches have historically taken place, so no working prototypes were built. Not built. However, the popularity of small satellites has increased in recent years, driving demand for smaller, more efficient rockets that are not constrained by the need to carry huge weights into space.

Krzysztof Busdyk Researchers at the University of Glasgow in the UK have created a small prototype rocket engine that consumes its own fuel tank. It’s not powerful enough to launch something into space, but it still shows that the concept works. “By burning the fuselage, we are solving the problem of rocket miniaturization. So when we want to send a small payload into space, we can do it right away, without waiting for a rideshare mission on a larger rocket. ” he says.

The researchers will present their findings at the American Institute of Aeronautics and Astronautics SciTech Forum in Florida on January 10th. This engine was called his Ouroboros-3, named after the ancient symbol of a snake eating its own tail.

Like the iconic snake, this engine is designed to devour its own backend when it uses up the rocket fuel it contains. “When you run out of propellant, you have an empty tank with all the useless structural mass,” Buzdyk says. “So what we’re doing is expending that dead weight so that we don’t have to carry it around on the way up, so we can carry more mass into space.”

In the prototype, as the oxygen and propane that make up the engine’s main fuel are burned, a plastic tube that holds the fuel is also fed into the engine. This tube makes up up to one-fifth of the total propellant used in burns and provides approximately 100 newtons of thrust. This is only about four times the force required to crack an egg.

The team is currently working on a larger prototype capable of delivering about 1,000 newtons of thrust. This is about one-sixth of the thrust required for the engine to reach suborbital space, and about one-twentieth of the thrust. To get it back on track.

“Additional testing should allow us to scale up the rocket… [but] In some cases, scaling up is not easy, easy or unlikely.” Haim Benaroya at Rutgers University in New Jersey. Challenges include ensuring that the plastic fuselage burns and feeds it to the engine at a constant rate, and testing how burning rocket debris changes its shape and thus its flight path. It is included.

In addition to increasing launch efficiency, autophage engines could also help reduce the problem of space debris, or spacecraft debris that can fly around in orbit and endanger other satellites. There is. Burning out spent fuel tanks, which are typically dropped into the atmosphere or left in orbit, could be a small step toward solving the problem, he said. hugh lewis at the University of Southampton, UK.

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Source: www.newscientist.com

Controversial Ziploc phone hack ignites discussion about children’s screen time

Here’s how to get kids to zip up during long car rides. TikToker @jeffandlaurenshow “The best travel hack for staying calm during long road trips,” he says, involves a Ziploc bag and a smartphone. Her 17 second clipAn image uploaded to the social media platform last month shows the driver’s headrest being removed from the car, using scissors to cut two holes in the side of the Ziploc bag where the headrest is connected to the seat, and then replacing the headrest in its original position. The image shows a woman returning to her home. . A woman presses play on a children’s video on her mobile phone and puts it in her bag, creating a hands-free screen for her toddler. “Things I wish I had known when I became a mom for the first time,” the TikToker wrote in text above the video, which has been viewed more than 50 million times. One TikToker claims the “best travel hack to keep the peace on long trips” involves a Ziploc bag and a smartphone. Her clip sparked a debate about giving children too much screen time. Jeff Lauren Show/TikTok The clip sparked a debate on TikTok about giving kids too much screen time, with some calling the hack “ridiculous.” One commenter laughed: “Oh yeah, keep them glued to their screens.” “It’s better to let kids watch something on TV than to have them kicking and screaming and crying because they’re bored,” another argued. “If they’re bored, than engage with them because they’re your kids,” the TikToker retorted. “Read to them,” suggested another. “Some of the kids can’t read yet, they’re crazy!” someone yelled. “There is such a thing as a picture book,” said the third person, expressionless. “Things I wish I had known when I became a mom for the first time,” the TikToker wrote in text above the video, which has been viewed more than 50 million times. Jeff Lauren Show/TikTok One TikToker commented on the comment section, saying, “There’s a serious battle going on over parenting here.” “It’s a stupid fight (lol),” said one dispatcher. The American Academy of Child and Adolescent Psychiatry recommends limiting screen time for all children. People under 18 months should only be exposed to screens when video chatting with someone on the go. Young children between 18 and 24 months of age should stick to educational programming, the academy says. Screening time for children ages 2 to 5 must be limited to one hour on weekdays and three hours on Saturdays or Sundays. And parents should talk to their children ages 6 and up to “encourage healthy habits and limit activities that involve screens.” Too much screen time is associated with sleep, weight, and mood problems, as well as poor performance in school.

Source: nypost.com