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Linux

SiFive Unveils Plan For Linux PCs With RISC-V Processors (venturebeat.com) 42

SiFive today announced it is creating a platform for Linux-based personal computers based on RISC-V processors. VentureBeat reports: Assuming customers adopt the processors and use them in PCs, the move might be part of a plan to create Linux-based PCs that use royalty-free processors. This could be seen as a challenge to computers based on designs from Intel, Advanced Micro Devices, Apple, or Arm, but giants of the industry don't have to cower just yet. The San Mateo, California-based company unveiled HiFive Unmatched, a development design for a Linux-based PC that uses its RISC-V processors. At the moment, these development PCs are early alternatives, most likely targeted at hobbyists and engineers who may snap them up when they become available in the fourth quarter for $665.

The SiFive HiFive Unmatched board will have a SiFive processor, dubbed the SiFive FU740 SoC, a 5-core processor with four SiFive U74 cores and one SiFive S7 core. The U-series cores are Linux-based 64-bit application processor cores based on RISC-V. These cores can be mixed and matched with other SiFive cores, such as the SiFive FU740. These components are all leveraging SiFive's existing intellectual property portfolio. The HiFive Unmatched board comes in the mini-ITX standard form factor to make it easy to build a RISC-V PC. SiFive also added some standard industry connectors -- ATX power supplies, PCI-Express expansion, Gigabit Ethernet, and USB ports are present on a single-board RISC-V development system.

The HiFive Unmatched board includes 8GB of DDR4 memory, 32MB of QSPI flash memory, and a microSD card slot on the motherboard. For debugging and monitoring, developers can access the console output of the board through the built-in microUSB type-B connector. Developers can expand it using PCI-Express slots, including both a PCIe general-purpose slot (PCIe Gen 3 x8) for graphics, FPGAs, or other accelerators and M.2 slots for NVME storage (PCIe Gen 3 x4) and Wi-Fi/Bluetooth modules (PCIe Gen 3 x1). There are four USB 3.2 Gen 1 type-A ports on the rear, next to the Gigabit Ethernet port, making it easy to connect peripherals. The system will ship with a bootable SD card that includes Linux and popular system developer packages, with updates available for download from SiFive.com. It will be available for preorders soon.

For some more context: Could RISC-V processors compete with Intel, ARM, and AMD?
Hardware

The Raspberry Pi 400 is a Compact Keyboard With a Built-in Computer (theverge.com) 151

The Raspberry Pi Foundation has announced the Raspberry Pi 400, a compact keyboard with an ARM-based computer built in. Just plug it into a TV or monitor using one of its two micro HDMI ports, insert a microSD card, attach a power cord and mouse, and you've got yourself a basic computer for day-to-day tasks, coding, or media playback. It's available starting today as a standalone machine for $70 or in a bundle including a mouse, power supply, microSD card, HDMI cable, and beginner's guide for $100. From a report: The hope is the Pi 400's form factor, plus these optional bundled items, makes it more approachable and user-friendly. That's important when you're selling an affordable computer, and it's especially important when you're selling an accessible device to help children learn to code. It looks more like a piece of consumer electronics than the basis for a DIY project. [...] Aside from its keyboard and form factor, the Raspberry Pi 400 is a very similar computer to last year's Raspberry Pi 4. It's got a slightly faster quad-core 1.8GHz ARM Cortex-A72 CPU, up from 1.5GHz in the Pi 4, 4GB of RAM, Gigabit Ethernet, Bluetooth 5.0, and 802.11ac Wi-Fi. There are a pair of micro HDMI ports that can each output up to 4K / 60Hz, two USB 3.0 ports, and a single USB 2.0 port. Power is provided via a USB-C port, there's a microSD card slot for storage, and there's a GPIO header for attaching a variety of more niche devices.
Cloud

iCloud Outage Now Affecting 14 Different Apple Services (cnet.com) 36

Apple's "System Status" page indicates 14 current issues, some of which began nearly five hours ago.

CNET reports the services affected "include Find My, iCloud Account & Sign In, iCloud Backup, iCloud Bookmarks & Tabs, iCloud Calendar, iCloud Contacts, iCloud Drive, iCloud Keychain, iCloud Mail, iCloud Storage Upgrades, Photos and Screen Time."

Engadget writes "the timing is less than ideal, even if this is likely to be a small interruption in the grander scheme of things." The issue comes weeks after an outage that affected both iCloud and Apple's media services. It also follows mere days after the debut of Apple One, where iCloud storage (also affected by the outage) plays an important role.
Transportation

Waymo Pulls Back the Curtain On 6.1 Million Miles of Self-Driving Car Data (theverge.com) 57

An anonymous reader quotes a report from The Verge: In its first report on its autonomous vehicle operations in Phoenix, Arizona, Waymo said that it was involved in 18 crashes and 29 near-miss collisions during 2019 and the first nine months of 2020. These crashes included rear-enders, vehicle swipes, and even one incident when a Waymo vehicle was T-boned at an intersection by another car at nearly 40 mph. The company said that no one was seriously injured and "nearly all" of the collisions were the fault of the other driver. The report is the deepest dive yet into the real-life operations of the world's leading autonomous vehicle company, which recently began offering rides in its fully driverless vehicles to the general public. ... [I]n this paper, and another also published today, the company is showing its work. Waymo says its intention is to build public trust in automated vehicle technology, but these papers also serve as a challenge to other AV competitors.

The two papers take different approaches. The first outlines a multilayered approach that maps out Waymo's approach to safety. It includes three layers: Hardware, including the vehicle itself, the sensor suite, the steering and braking system, and the computing platform; The automated driving system behavioral layer, such as avoiding collisions with other cars, successfully completing fully autonomous rides, and adhering to the rules of the road; Operations, like fleet operations, risk management, and a field safety program to resolve potential safety issues.

The second paper is meatier, with detailed information on the company's self-driving operations in Phoenix, including the number of miles driven and the number of "contact events" Waymo's vehicles have had with other road users. This is the first time that Waymo has ever publicly disclosed mileage and crash data from its autonomous vehicle testing operation in Phoenix. Between January and December 2019, Waymo's vehicles with trained safety drivers drove 6.1 million miles. In addition, from January 2019 through September 2020, its fully driverless vehicles drove 65,000 miles. Taken together, the company says this represents "over 500 years of driving for the average licensed US driver," citing a 2017 survey of travel trends by the Federal Highway Administration.
"This is a major milestone, we think, in transparency," said Matthew Schwall, head of field safety at Waymo, in a briefing with reporters Wednesday. Waymo claims this is the first time that any autonomous vehicle company has released a detailed overview of its safety methodologies, including vehicle crash data, when not required by a government entity. "Our goal here is to kickstart a renewed industry dialogue in terms of how safety is assessed for these technologies," Schwall said.
Data Storage

Seagate Says 20 TB HAMR Drives Will Arrive in December, 50 TB Capacities in 2026 (techpowerup.com) 83

Seagate revealed several interesting points about its upcoming releases of next-generation hard drives during its quarterly earnings call this week. From a report: The company has disclosed a shift to a new generation of HDDs based on so-called heat-assisted magnetic recording (HAMR) technology. This technology is set to bring many improvements compared to the one currently used by Seagate's rivals like Western Digital. The rivaling company uses energy-assisted perpendicular magnetic recording (ePMR) and microwave-assisted (MAMR) technologies and it already has a 20 TB drive in the offering. Seagate announced that they will unveil a 20 TB HDD in December this year, with the use of HAMR technology, which will bring many improvements like better speed and more efficient disk read/write. It added, "Seagate will be the first to ship this crucial technology with a path to deliver 50-TB HAMR drives forecast in 2026."
Data Storage

Some Google One Plans Now Come With a Complimentary VPN (engadget.com) 16

An anonymous reader shares a report: If you're a Google One subscriber, there's a new reason to consider the service's $10 per month 2TB plan. Google is adding built-in virtual private network (VPN) functionality to the Google One app, but you'll need to subscribe to the 2TB and above plans to access the perk. While the feature is built into Google One, the company says you can take advantage of it while using any other app on your Android phone to protect your online privacy. Moreover, with the family sharing feature that comes with Google One, five other people can get access to a VPN as well.
Power

World's First Ocean Hybrid Platform Converts Tidal Waves Into Energy (ieee.org) 39

Qusi Alqarqaz writes via IEEE Spectrum: In August I spoke with Philipp Sinn, founder of Sinn Power, a German green-energy startup founded in 2014. This year he and his colleagues began building and testing the world's first ocean hybrid platform. The floating platform uses a combination of wave, wind, and solar energy to harness renewable energy on the open seas, Sinn says. The company has been testing the structure, which has attracted investors, energy experts, scientists, and government officials from all over the world to Heraklion, the largest city on the Greek Island of Crete.

The wind, wave, and photovoltaic platform is scalable in capacity and can be designed to generate 80 kilowatts to power small houses by the coast and up to 2 megawatts to industrial buildings, Sinn says. The technology can be adapted to customers' needs and location requirements, he adds. He acknowledges that the maritime environment is challenging. All the energy systems on the platform contain sensitive components and power electronics that must not be exposed to any fluids, he says.

To cope with such conditions, the company developed a product family consisting of electric machines, power electronics, and storage solutions, all of which comply with International Protection Code 68, which classifies and rates degrees of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and immersion in deep water. "We see [our company's] technologies as a movement toward a sustainable future," Sinn says. "The goal is to provide people all over the world with clean, reliable, and affordable energy harnessed from the power of the ocean."
"Development of ocean-energy production -- from concept to commercial release -- has been a slow, expensive process," writes Alqarqaz in closing. "For the industry to succeed, it is essential to get financial support from governments all over the world. It is also important to strengthen the cooperation between countries, especially with regard to joint projects and the exchange of technology."
Medicine

Folding@Home Exascale Supercomputer Finds Potential Targets For COVID-19 Cure (networkworld.com) 38

An anonymous reader quotes a report from Network World: The Folding@home project has shared new results of its efforts to simulate proteins from the SARS-CoV-2 virus to better understand how they function and how to stop them. Folding@home is a distributed computing effort that uses small clients to run simulations for biomedical research when users' PCs are idle. The clients operate independently of each other to perform their own unique simulation and send in the results to the F@h servers. In its SARS-CoV-2 simulations, F@h first targeted the spike, the cone-shaped appendages on the surface of the virus consisting of three proteins. The spike must open to attach itself to a human cell to infiltrate and replicate. F@h's mission was to simulate this opening process to gain unique insight into what the open state looks like and find a way to inhibit the connection between the spike and human cells.

And it did so. In a newly published paper, the Folding@home team said it was able to simulate an "unprecedented" 0.1 seconds of the viral proteome. They captured dramatic opening of the spike complex, as well as shape-shifting in other proteins that revealed more than 50 "cryptic" pockets that expand targeting options for the design of antivirals. [...] The model derived from the F@h simulations shows that the spike opens up and exposes buried surfaces. These surfaces are necessary for infecting a human cell and can also be targeted with antibodies or antivirals that bind to the surface to neutralize the virus and prevent it from infecting someone.
"And the tech sector played a big role in helping the find," adds the anonymous Slashdot reader. "Microsoft, Nvidia, AMD, Intel, AWS, Oracle, and Cisco all helped with hardware and cloud services. Pure Storage donated a one petabyte all-flash storage array. Linus Tech Tips, a hobbyist YouTube channel for home system builders with 12 million followers, set up a 100TB server to take the load off."
Power

US Grid-Battery Costs Dropped 70% Over 3 Years (arstechnica.com) 92

An anonymous reader quotes a report from Ars Technica: In recent years, the cost of solar and wind energy has declined precipitously, which has accelerated the growth of these renewable energy technologies. Increasingly, utilities are now planning for a future grid dominated by solar and wind. That will require changes in grid management and transmission upgrades as well as the addition of storage to smooth out the supply from variable generators. Grid storage is still pretty early days, but we're already seeing huge cost reductions as the industry matures. The US Energy Information Administration (EIA) highlighted this recently, showing that grid-scale battery-project costs in the United States dropped 70 percent in just a few years.

Between 2015 and 2018, average project costs decreased from $2,152 per kilowatt-hour of storage to $625. Costs will need to drop much more for grid batteries to scale, but that's a huge improvement in a short period of time. By the end of 2018, the US had 869 megawatts of battery power capacity and 1,236 megawatt-hours of energy capacity. (Power is the rate at which the batteries can supply electricity, while energy is the total amount it can supply when going from full charge to empty.) EIA also has installation data for 2019, which saw the addition of another 150 megawatts/450 megawatt-hours. And in just the first seven months of 2020, yet another 300 megawatts of power capacity were installed. EIA doesn't see this slowing down. It expects installed battery storage to increase by 6,900 megawatts "in the next few years" -- a figure ambiguous enough to allow for a rapid spike in planned projects.

Chrome

Chrome Caught Exempting Google Sites From User Requests To Delete Data (msn.com) 50

This week the Verge reported: If you ask Chrome to delete all cookies and site data whenever you quit the browser, it's reasonable to expect that this policy applies to all websites. Recently, though, a bug in the browser meant data wasn't being removed for two sites in particular: Google and YouTube.

This problem was first documented by iOS developer Jeff Johnson on his blog. Johnson found that in Chrome version 86.0.4240.75, "local storage" data for Google.com and YouTube.com stuck around even after restarting the browser. We've been able to replicate similar behavior... The Register notes that Chrome's behavior could allow Google to stash cookie-style data as site data, allowing it to track users even when they think they're being careful by deleting their cookie and site data every time they close the browser.

In a statement, Google said it was aware of the issue and was working on a fix... At least one of the affected sites, YouTube, appears to have already been fixed. After we upgraded the Chrome browser to version 86.0.4240.111, YouTube's local storage data seems to successfully purge after a restart, although the data from Google.com still sticks around.

Power

Greenpeace Claims Fukushima Water Release Could Change Human DNA (cnn.com) 200

An anonymous reader quotes CNN: Contaminated water that could soon be released into the sea from the Fukushima Daiichi nuclear power plant contains radioactive carbon with the potential to damage human DNA, environmental rights organization Greenpeace has warned.

The environmental group claims that the 1.23 million metric tons of water stored at the plant — scene of the 2011 Fukushima Daiichi nuclear disaster — contains "dangerous" levels of the radioactive isotope carbon-14 and other "hazardous" radionuclides, which it says will have "serious long-term consequences for communities and the environment" if the water is released into the Pacific Ocean.

To cool fuel cores at the damaged Fukushima nuclear plant operator Tokyo Electric Power Company (TEPCO) has pumped in tens of thousands of tons of water over the years. Once used, the water is put into storage. But nine years on from Japan's worst nuclear disaster, storage space is running out, and the government is still deciding what to do with the water. Authorities, including the country's environment minister, have indicated the only solution is to release it into the ocean — a plan facing opposition from environmental campaigners and fishing industry representatives. On Friday, the Japanese government postponed a decision on what to do with the water.

Businesses

Wisconsin Report Confirms Foxconn's So-Called LCD Factory Isn't Real (theverge.com) 109

According to a report from Wisconsin's Division of Executive Budget and Finance, Foxconn has not built the enormous Gen 10.5 LCD factory in Wisconsin that it specified in its contract with the state. "It also says that the building the company claims is a smaller Gen 6 LCD factory shows no signs of manufacturing LCDs in the foreseeable future and 'may be better suited for demonstration purposes,'" reports The Verge. From the report: The report notes that Foxconn received a permit to use its so-called "Fab" for storage, which The Verge first reported this week. Furthermore, according to an industry expert consulted by the state, Foxconn has not ordered the equipment that would be needed to make LCDs. If the building were to be used as an LCD manufacturing facility, the expert notes it would be the smallest Gen 6 in the world and "would appear to be more of a showcase than a business viable for the long term." If any LCD-related manufacturing were to take place in the building, the analysis says, it would likely only be the final assembly of components produced elsewhere and imported to Wisconsin. Such a project would have a vastly smaller impact on local supply chains and employ nowhere near the 13,000 workers anticipated in Foxconn's contract with the state.

Wisconsin Secretary of the Department of Administration Joel Brennan said in an interview with The Verge today that "clearly the Gen 6 that's been discussed and built in Mount Pleasant is not similar to other Gen 6 fabs around the world." Brennan said the memo was an effort to consult industry experts to better understand the scope of Foxconn's current project and its potential impact on the state. "There was justified criticism of the [former Governor Scott] Walker administration for entering into this contract, and not really getting any outside experts for an industry that was new to Wisconsin," Brennan said. "This is about making sure that we can use the best expertise that we have inside and outside state government so that we can make the best decisions possible." The report provides the fullest articulation of the state's reason for rejecting Foxconn's subsidy payments so far. Last week, the Wisconsin Economic Development Corporation (WEDC), which oversees the deal, denied the company its first installment of the nearly $3 billion refundable tax credits because it hasn't built the "Gen 10.5 Fab" specified in its contract.

The project Foxconn has pursued instead, the new analysis says, would not have warranted the record-breaking subsidy package passed by then-Gov. Scott Walker, nor required the infrastructure state and local governments have built to support it. "Taxpayers fully performed their side of the agreement to date, while the Recipients have not," the report says. In fact, "state taxpayers have spent as much if not more than" Foxconn has on improvements to the company's supposed manufacturing campus. The Verge previously reported that state and local governments spent at least $400 million on the project, mostly on land and infrastructure the company will likely never need. Foxconn listed approximately $300 million in capital expenses at the end of 2019.

NASA

NASA's OSIRIS-REX Makes Historic Touchdown On Asteroid Bennu To Collect Rock Samples (newatlas.com) 17

NASA's Origins Spectral Interpretation Resource Identification Security Regolith Explorer (OSIRIS-REx) sample return spacecraft has successfully touched the asteroid Bennu and collected a 2-oz sample of its surface. New Atlas reports: Launched atop an Atlas/Centaur booster from Space Launch Complex 41 at Cape Canaveral Air Force Station in Florida on September 8, 2016 at 7:05 pm EDT, the robotic OSIRIS-REx probe spent four years matching orbits to rendezvous with Bennu before making a detailed survey of the body's surface to find a safe area of scientific interest. Because Bennu is 205 million miles (330 million km) from Earth, it takes a radio signal 18 minutes to reach the spacecraft from mission control, so today's Touch-And-Go (TAG) maneuver was carried out under completely autonomous control by the onboard computer, relying on updated instructions from NASA engineers.

During the approach, the robotic arm called the Touch-And-Go Sample Acquisition Mechanism (TAGSAM) was deployed with its disk-shaped sample collection head forward and the solar panels angled back to avoid accidental contact with the asteroid. The spacecraft then slowly approached the 26-ft (8-m) diameter "Nightingale" landing site from its normal orbit altitude of 2,500 ft (770 m) using its Natural Feature Tracking system to make a safe approach and then pull back from Bennu before a collision could occur. When the arm made contact with the asteroid surface for about 15 seconds, a blast of nitrogen gas dislodged a small, carbon-rich sample of pebbles and soil, which were collected by the sampler head and then stowed. If it turns out that insufficient material is recovered, the spacecraft will try again at a different area in January 2021. Otherwise, the current sample will be placed in a return capsule and in March 2021, OSIRIS-REx will depart from Bennu and begin its journey back to Earth.

The sample return capsule will separate from the mothership in September 2023, reenter the Earth's atmosphere to land at the Utah Test and Training Range for collection and be transferred to NASA's Johnson Space Flight Center in Houston for storage and distribution to select research teams.

Data Storage

Backblaze Hard Drive Stats Q3 2020 (backblaze.com) 37

Backblaze's Q3 2020 hard drive stats: As of September 30, 2020, Backblaze had 153,727 spinning hard drives in our cloud storage ecosystem spread across four data centers. Of that number, there were 2,780 boot drives and 150,947 data drives. This review looks at the Q3 2020 and lifetime hard drive failure rates of the data drive models currently in operation in our data centers and provides a handful of insights and observations along the way. [...] There are several models with zero drive failures in the quarter. That's great, but when we dig in a little we get different stories for each of the drives.

The 18TB Seagate model (ST18000NM000J) has 300 drive days and they've been in service for about 12 days. There were no out of the box failures which is a good start, but that's all you can say.
The 16TB Seagate model (ST16000NM001G) has 5,428 drive days which is low, but they've been around for nearly 10 months on average. Still, I wouldn't try to draw any conclusions yet, but a quarter or two more like this and we might have something to say.
The 4TB Toshiba model (MD04ABA400V) has only 9,108 drive days, but they have been putting up zeros for seven quarters straight. That has to count for something.
The 14TB Seagate model (ST14000NM001G) has 21,120 drive days with 2,400 drives, but they have only been operational for less than one month. Next quarter will give us a better picture.
The 4TB HGST (model: HMS5C4040ALE640) has 274,923 drive days with no failures this quarter.

Intel

Intel Agrees To Sell Storage Unit To SK Hynix for $9 Billion (bloomberg.com) 49

Intel has agreed to sell its Nand memory unit to South Korea's SK Hynix for about $9 billion, a deal that allows the U.S. chipmaker to concentrate on its main business while shoring up the Asian company's position in a booming market. From a report: The chipmaker will pay 10.3 trillion won for the Intel unit, which makes flash memory components for computers and other devices. The acquisition, which will take place in stages through 2025, includes Intel's solid-state drive, Nand flash and wafer businesses, as well as a production facility in the northeastern Chinese city of Dalian. The deal should shore up Hynix's position in a business that's boomed after Covid-19 drove demand for the chips used in everything from Apple's iPhones to data centers. It whittles down another player in an industry the Korean company dominates alongside Samsung Electronics and Micron Technology, potentially buoying Nand flash prices.
Power

A Group of Materials Called Perovskites Could Be a Game-Changer For Solar Power (independent.co.uk) 62

Researchers from Australia have discovered that the widely acclaimed mineral perovskite can be used to transform the solar industry through cheaper and more efficient photovoltaics. The Independent reports: Perovskite, which is forged deep within the Earth's mantle, has been hailed for its unprecedented potential to convert sunlight into electricity. Researchers have already improved its sunlight-to-energy efficiency from around 3 per cent to over 20 per cent in the space of just a few years. "It's unbelievable, a miracle material," Z. Valy Vardeny, a materials science professor from the University of Utah, said about perovskite in 2017. At the time it was thought that it would be at least 10 years before it reached a point that the material could be used in commercial solar cells, however the latest breakthrough could see the wide uptake of the technology much sooner. "It was one of those unusual discoveries that you sometimes hear about in science," said Dr Hall from the University of Melbourne.

With the help of researchers at the University of Sydney, the scientists were able to use computational modeling to solve the problem of instability within the material when exposed to sunlight. The unlikely solution was to undo the disruption caused by light at lower intensities by focussing the light into a high-intensity beam. Dr Hall added: "What we've shown is that you can actually use the material in the state that you want to use it, for a solar cell - all you need to do is focus more light onto it." The research could also have significant implications for data storage, with perovskites offering a way to dramatically increase a device's potential capacity.
The study has been published in the journal Nature Materials.
Power

Tesla Powerwall Rival Seeks To Bring Hydrogen Into Your Home (bloomberg.com) 133

An anonymous reader quotes a report from Bloomberg: It's about the size of Tesla Inc.'s Powerwall, but can store up to three times as much energy over a longer period. That's the promise of a new hydrogen-based energy-storage system for homes and businesses being developed by Australian startup Lavo Hydrogen Technology Ltd. The technology, developed with scientists at the University of New South Wales, uses power from rooftop solar panels to produce hydrogen from water by electrolysis. The gas is stored in a metal hydride container and converted back into electricity when needed using a fuel cell.

Australia's world-beating rooftop-solar take-up rates make it an ideal early market, said Lavo Chief Executive Officer Alan Yu. The unit will go on sale from November, with installations starting in June 2021, subject to final approvals. The company plans to sell 10,000 units a year by 2022. At about triple the price of a Powerwall, the Lavo unit's main selling point will be its ability to store more energy for longer. Each system will initially cost A$34,750 ($24,620) and will be able to hold 40 kilowatt-hours of power -- enough to supply an average household for more than two days, according to the company. Tesla's Powerwall holds about 13.5 kilowatt-hours. Lavo's Yu acknowledged that the higher cost of the system might initially limit interest to energy-technology enthusiasts initially, but he also sees it as a solution for small off-grid rural villages to replace diesel generators or a compact solution for communities and homes cut off from the main grid by natural disasters such as bushfires.

Science

Physicists Successfully Carry Out Controlled Transport of Stored Light (phys.org) 39

schwit1 shares a report from Phys.Org: A team of physicists led by Professor Patrick Windpassinger at Johannes Gutenberg University Mainz (JGU) has successfully transported light stored in a quantum memory over a distance of 1.2 millimeters. They have demonstrated that the controlled transport process and its dynamics has only little impact on the properties of the stored light. The researchers used ultra-cold rubidium-87 atoms as a storage medium for the light as to achieve a high level of storage efficiency and a long lifetime. The controlled manipulation and storage of quantum information as well as the ability to retrieve it are essential prerequisites for achieving advances in quantum communication and for performing corresponding computer operations in the quantum world. Optical quantum memories, which allow for the storage and on-demand retrieval of quantum information carried by light, are essential for scalable quantum communication networks.

In their recent publication, Professor Patrick Windpassinger and his colleagues have described the actively controlled transport of such stored light over distances larger than the size of the storage medium. Some time ago, they developed a technique that allows ensembles of cold atoms to be transported on an 'optical conveyor belt' which is produced by two laser beams. The advantage of this method is that a relatively large number of atoms can be transported and positioned with a high degree of accuracy without significant loss of atoms and without the atoms being unintentionally heated. The physicists have now succeeded in using this method to transport atomic clouds that serve as a light memory. The stored information can then be retrieved elsewhere. Refining this concept, the development of novel quantum devices, such as a racetrack memory for light with separate reading and writing sections, could be possible in the future.
The findings have been published in the journal Physical Review Letters.
Google

Google Is Killing Unlimited Drive Storage For Non-Enterprise Users (petapixel.com) 50

If you're one of the Google Drive users who is taking advantage of unlimited storage for $12 per month on G Suite, beware. Workspace is replacing G Suite and offers more features for those who do, but you might not want to switch: unlimited storage on Workspace will cost you at least $20 a month. Jaron Schneider reports via PetaPixel: Currently G Suite business subscribers (which do not need to be actual businesses, but any individuals looking for greater storage capacity) can access unlimited storage on Drive for just $12 a month. For photographers with considerable backlogs of photos, this was a relatively inexpensive cloud storage backup solution. Google states in its plans that groups using this particular plan with four or fewer members are supposed to be only eligible for 1 TB of storage each, but in testing by Android Police and others have shown that Google has never enforced that limit.

Unfortunately, this appears to be changing with the transition to Workplace. According to the company's list of plans, which you can view here, there is a limit of 2 TB for individual Business Standard users and 5 TB per person on its new Business Plus plan. To get more, you will have to go to the Enterprise level which Google says requires you to work directly with a Google sales representative (this appears to actually be the case), but Google does promise they can offer as much storage "as you need" in this category. That doesn't explicitly say unlimited, but should realistically operate as such for now. Pricing in that Enterprise level will cost you $20 per month ($30 per month on Enterprise Plus), nearly double the previous price for the same amount of storage. For now, G Suite customers will be able to stick with their current plans if they do not switch to Workplace, but Google is intending to transition all users over to the new system eventually.

Businesses

Finnish Startup Unveils Machine That Takes Office-Air CO2 and Converts It Into Fuel (arstechnica.com) 114

Over a video call, Finnish start-up Soletair Power showed Ars Technica their machine that converts office-air carbon dioxide into fuel. Scott K. Johnson reports: The value proposition for the first part of the device is pretty straightforward. Carbon dioxide accumulates in buildings full of people, and higher CO2 concentrations may impact your ability to think clearly. The usual way to manage that is to introduce more outside air (which may need to be heated/cooled). Another could be to selectively filter out CO2. This device could do the latter for you. That CO2 could simply be vented outside or used to produce an unwieldy amount of seltzer. Instead, what makes Soletair's idea more interesting is that the rest of its device turns the CO2 into fuel. The configuration the company demonstrated makes methane but could be swapped for a liquid fuel process. Depending on the source of the energy running the machines, these fuels could be carbon-neutral since the carbon comes from the air. Whether it's economically viable is another question.

The CO2 capture technique they're using is a scaled-down version of those designed for combustion power plants. Air goes through a chamber full of small granules that contain amines -- compounds that bind with CO2 molecules. Periodically, the granules are cycled through a heating step. The temperature only needs to rise to shy of 120C, Soletair's Petri Laakso and Cyril Bajamundi told Ars, so steam from the local heat system and/or an electric heating element is sufficient. This makes the amine granules release the CO2 they're holding, which accumulates in a storage tank. The granules are then ready to absorb more CO2. The other two-thirds of the machine, which measures about 2 meters tall, 5 meters long, and 1 meter wide, deal with turning that CO2 into a usable fuel. First, there's an electrolyzer that splits water to make hydrogen gas. Then hydrogen is combined with CO2 in a methanation reactor to produce pure methane gas.

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