The chess world was amazed when the computer algorithm AlphaZero learned, after just four hours on its own, to beat the best chess programs built on human expertise. Now a research group at Aarhus University in Denmark has used the very same algorithm to control a quantum computer.
All across the world, numerous research groups are attempting to build a quantum computer. Such a computer would be able to solve certain problems that cannot be solved with current classical computers, even if we combined all these computers in the world into one.
At Aarhus University, researchers share the ambition of building a quantum computer. For this reason, a research group under the direction of Professor Jacob Sherson has just used the computer algorithm AlphaZero to learn to control a quantum system.
LOS ALAMOS, N.M., Jan. 15, 2020 — Scientists at Los Alamos National Laboratory have incorporated meticulously engineered colloidal quantum dots into a new type of LED containing an integrated optical resonator, which allows the LEDs to function as lasers.
Science fiction writers envisioned the technology decades ago, and startups have been working on developing an actual product for at least 10 years.
Today, Mojo Vision announced that it has done just that—put 14K pixels-per-inch microdisplays, wireless radios, image sensors, and motion sensors into contact lenses that fit comfortably in the eyes. The first generation of Mojo Lenses are being powered wirelessly, though future generations will have batteries on board. A small external pack, besides providing power, handles sensor data and sends information to the display. The company is calling the technology Invisible Computing, and company representatives say it will get people’s eyes off their phones and back onto the world around them.
The first application, says Steve Sinclair, senior vice president of product and marketing, will likely be for people with low vision—providing real-time edge detection and dropping crisp lines around objects. In a demonstration last week at CES 2020, I used a working prototype (albeit by squinting through the lens rather than putting it into my eyes), and the device highlighted shapes in bright green as I looked around a dimly lit room.
Use of an AC rather than a DC electric field can improve the piezoelectric response of a crystal. Now, an international team of researchers say that cycles of AC fields also make the internal crystal domains in some materials bigger and the crystal transparent.
“There have been reports that the use of AC fields could significantly improve the piezoelectric responses—for example by 20% to 40%—over DC fields and the improvements have always been attributed to the smaller internal ferroelectric domain sizes that resulted from the cycles of AC fields,” said Long-Qing Chen, Hamer Professor of Materials Science and Engineering, professor of engineering science and mechanics, and professor of mathematics at Penn State. “About three years ago, Dr. Fei Li, then a research associate at the Materials Research Institute at Penn State, largely confirmed the improvement of piezoelectric performances from application of AC fields. However, it was not clear at all how the internal ferroelectric domains evolved during AC cycles.
”Our group does mostly computer modeling, and more than a year ago we started looking into what happens to the internal domain structures if we apply AC fields to a ferroelectric piezoelectric crystal. We are very curious about how the domain structures evolve during AC cycles. Our computer simulations and theoretical calculations did show an improved piezoelectric response, but our simulations also demonstrated that the ferroelectric domain sizes actually got bigger during AC cycles rather than smaller as reported in the literature.”
Batteries are the key to decarboni z ing both transport and the grid, but today’s technology is still a long way from living up to this promise. IBM seems to have decided its computing chops are the key to solving the problem.
Lithium-ion batteries are still the gold standard technology in this field, and they’ve come a long way; 10 years ago they could just about get your iPod through the day, today they can power high-performance cars over hundreds of miles.
But if we want to reach a point w h ere batteries can outperform gasoline or store huge amounts of solar energy, we need some breakthroughs. So IBM has teamed up with Mercedes-Benz and its parent company Daimler to develop new batteries that could match up to our needs.
IBS scientists and their colleagues have recently report an ultimate electrocatalyst that addresses all of the issues that trouble H2O2 production. This new catalyst comprising the optimal Co-N4 molecules incorporated in nitrogen-doped graphene, Co1-NG(O), exhibits a record-high electrocatalytic reactivity, producing up to 8 times higher than the amount of H2O2 that can be generated from rather expensive noble metal-based electrocatalysts.
Just as we take a shower to wash away dirt and other particles, semiconductors also require a cleaning process. However, its cleaning goes to extremes to ensure even trace contaminants “leave no trace.” After all the chip fabrication materials are applied to a silicon wafer, a strict cleaning process is taken to remove residual particles. If this high-purity cleaning and particle-removal step goes wrong, electrical connections in the chip are likely to suffer from it. With ever-miniaturized gadgets on the market, the purity standards of the electronics industry reach a level equivalent to finding a needle in a desert.
That explains why hydrogen peroxide (H2O2), a major electronic cleaning chemical, is one of the most valuable chemical feedstocks that underpins the chip-making industry. Despite the ever-growing importance of H2O2, its industry has been left with an energy-intensive and multi-step method known as the anthraquinone process. This is an environmentally unfriendly process which involves the hydrogenation step using expensive palladium catalysts. Alternatively, H2O2 can be synthesized directly from H2 and O2 gas, although the reactivity is still very poor and it requires high pressure. Another eco-friendly method is to electrochemically reduce oxygen to H2O2 a via 2-electron pathway. Recently, noble metal-based electrocatalysts (for example, Au-Pd, Pt-Hg, and Pd-Hg) have been demonstrated to show H2O2 productivity although such expensive investments have seen low returns that fail to meet the scalable industry needs.
The unique relationship between the coordinates in the bore of a Magnetic Resonance Imaging (MRI) scanner and the magnetic field gradients used for MRI allows building a localization system based on the measurement of these gradients. We have previously presented a miniature 3D Hall probe integrated in a low cost, low voltage 0.35μm CMOS chip from which we were able to measure the magnetic gradient 3D maps of 1.5T and 3T MRI scanners. In this paper, this 3D Hall probe has been integrated in a magnetic tracking device prototype and an algorithm was built to determine the position of the probe. First experimental results show that the probe gives its position with accuracy close to a few millimeters, and that sub-millimeter localization in a one-shot-3ms-measurement should be readily possible. Such a prototype opens the way for the development of MRI compatible real time magnetic tracking systems which could be integrable in surgical tools for MR-guided minimally-invasive surgery.
In October 2019, Google made a big announcement. It announced its 53-qubit quantum computer named Sycamore had achieved ‘quantum supremacy.’ That’s when quantum computers can complete tasks exponentially more quickly than their classical counterparts. In this case, Google said its quantum machine completed a task in 200 seconds that would have taken the world’s most powerful computer 10,000 years to complete. IBM, another major player in quantum computing, took issue with the findings. Either way, it was a big milestone in quantum computing, and it’s leading to a lot of hype in the field. Here’s how quantum computing works, and how it could change everything from Wall Street to Big Pharma and beyond.
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No matter how cheap or fast paid internet service gets, the Internet of Things (IOT) won’t take wings until we have ubiquitous access to a completely decentralized, open-standard network that does not require a provider subscription. This month, we may be a step closer.
Let’s talk about internet connected gadgets. Not just your phone or PC—and not even a microwave oven or light bulb. Instead, think of everyday objects that are much smaller and much less expensive. Think of things that seemingly have no need to talk with you.
Now think of applications in which these tiny things need to communicate with each other and not just with you. Think of the cost of this “thing” compared to the added cost of continuous communications. Do so many things really need to talk in the first place?
First, there were Trackers…
Have you tried one of those tracking devices that help you find a lost bicycle or wallet? Tile is the most visible brand. They offer trackers shaped like dog tag, a fat button or a credit card. They recently began offering users the ability to replace the battery. In the past, you had to buy new trackers every year.
Trackers are useful, but connectivity is either…
Very expensive: Each devices requires a mobile phone data plan —or—
Intermittent and short range: Tile uses Bluetooth and relies on a community of owners to “pick up” on your lost or stolen object. This only occurs if another user stumbles into close range range and with their Tile app active on a mobile phone.
Tile was cool in its heyday, but that day is passing as we transition into the Internet of Things (IOT). It took me a few years to fully embrace the need for an internet of “things” or how it differs from the internet that we use every day. In an effort to more quickly bring about your own Ahahh! moment, consider just one example.
The Chandelier (an example with apologies to Sia)
Consider a huge chandelier across the domed ceiling of a grand opera house. It has 85,000 tiny LEDs that can throb and pulse during animated light shows. Each individual light is replaceable—only 10¢. But getting a scaffold and a maintenance crew to the 50 foot dome takes 6 hours and costs almost $500.
Every month, one or two of the tiny lights go dark (or get stuck on the wrong color). Fortunately, expensive maintenance can be delayed. A few bad LEDs cannot be seen from the auditorium below. They are only a problem when many lights go dark:
a) More than 2% of bulbs —OR— b) More than 8 bulbs in any cubic region of 250 LEDs —OR— c) More than 3 bulbs positioned at a critical juncture of special-effect animation d) Any LED programmed to be green for more than 250 mS during the Disney Little-Mermaid animation
These minimum operating conditions may sound complex, but they were determined at the time of installation by a meticulous trial with a focus group and survey forms. Dozens of volunteers looked up at the chandelier and watched several programmed light shows.
Trying to count faulty lights and measure them against these criteria before each performance is nearly impossible. Should we chuck these standards and just leave the maintenance decision in the hands of whomever is managing the facility each night?
No. Standards are good. There is a better way.
Imagine if all the little LEDs could communicate with each other and generate a weighted vote as to whether maintenance is required. Now, imagine that the added circuitry to communicate between LEDs—and even to managers and maintenance staff—cost no more than the LED itself. Just pennies for the circuit. No communications infrastructure or subscription is needed at all.
This example may seem a bit extreme, but it is taken from real life, and a perfect example of the Internet of Things. This is just the beginning. As IOT takes off, a connected society will venture far beyond Bluetooth trackers into applications that we cannot yet imagine.
But how will the internet things be connected—especially if so many devices are tiny, inexpensive and portable? We cannot expect every dog collar and portable asset to have a mobile subscription plan and an IMEI/MEID.
And short range tracking (like the Bluetooth Tile) is not too helpful for keeping tabs on your dog when he gets off leash. Or perhaps you want to track an asset that is less precious—for example, a soccer ball. You don’t just want to find it, you want to study game dynamics as it is kicked across a field. What about your favorite earrings? They belonged to your great grandmother. Imagine that they could never be misplaced. With IOT, everything possible. Apps and benefits are heading toward us like a freight train.
IOT doesn’t require 5G speed, but to be truly transformative, it requires ubiquitous, low-power and free connectivity. Coverage must be thorough, at least at a community level.
Do We Really Need IOT?
You bet we do! Just envision possibilities.
With miniaturization and the rapidly dropping cost of electronics, there are some tiny or inexpensive things could benefit greatly by constant connectivity. Today, my washing machine and air conditioner are WiFi enabled. Connectivity is even built into light bulbs.
But early connected smart home gadgets are designed primarily to talk within a home. When traveling, you might want an alert if water is leaking into the cellar. But let’s face it: When at the office or on vacation, most people don’t care to dim the kitchen lights or know when a load of laundry is ready for transfer to the dryer.
This is starting to change. Gadget makers all over the world are preparing for an era of remarkable information and utility that will emerge when devices communicate not just with their owners, but with each other. When tiny things can talk, a world with free, ubiquitous and redundant connectivity, will bring unexpected and remarkable benefits.
How to Get from Here to There?
All this requires simple, free and ubiquitous wide area networking. Most analysts expect that the brave new world will take wings until a popular, widely deployed internet access method emerges—one that does not require a service provider.
Does free internet access, with community wide coverage and a sustainable business model exist?
Enter the people’s network: The Helium hotspot. With a splashy adoption campaign, it is positioned to be the first successful mass-deployment of a very long range, low power signalling standard. If successful, Helium could jump start a category of access and coverage that is just what is needed for the next big thing.
The Helium hotspot, is a crossover between a residential router, and community internet access. Most importantly, it disintermediates the process. No ISP? Don’t worry! It is not required to get into the game and to enjoy significant benefits.
I think of Helium as Rooftop Communications on steroids (an early community mesh network that was way ahead its time). If 5 or more individuals in a typical city set up their own hotspot, every user enjoys shared community access to the Internet—even if only one of participant has internet service. In fact, a bridge to the legacy internet is not even an issue to access resources and data within the community. Every town service, store, event, school and library is online without anyone having a paid subscription to any service provider.
Helium is just beginning to roll out across the world. Early adopters acquire a Helium hotspot and they effectively “own” their city. At first, it works at moderately low speeds and over very long distances. Only a few are needed to kick start a city. When 20 or 30 residents join the party, network speed, coverage, consistency and overall utility become compelling. Not 5G or 4G—but capable of servicing critical needs on the go or as a back up method of Internet access. When this clever IOT network gets traction, it will eventually service most internet needs other than video.
Helium is the first Consumer product to use the low-power LoRa radio standard (Helium calls it “LongFi”). User owned Hotspots form a super mesh-network that the company hopes will cover entire continents. Unlike your router or smartphone hotspot, with Helium, there is no ISP or cell tower. Your neighbors are your peers and your entry ramp to the internet for services that are still on a legacy, subscriber network.
Enter The Blockchain: Seriously—Adoption It is token powered!
As if this weren’t exciting enough, Helium adoption is powered by a blockchain—like Bitcoin. No kidding!
Don’t let this deter you from testing Helium and taking control of your own city. Regardless of your opinion on Bitcoin and crypto, the blockchain is a clever lever to incentivize and reward adoption.
Helium hotspot ads are everywhere, but the first LongFi router is not cheap. Buyers are investing in the long game. Early adopters won’t find immediate value in hosting other users, but you will be amply rewarded as the technology is adopted. Hence, a blockchain token reward mechanism. The Helium reward token a functional cryptocurrency token. Some call it an Independent Coin Offering (ICO). Whaaat?! Hold on! Aren’t ICOs rip-offs?…
I have broad contempt for ICOs (they are all scams!). This fervent opinion forced me to carefully evaluate my enthusiasm for Helium. It almost led me to abandon research and look for an alternate long-range, decentralized communications ecosystem.
But the blockchain does not necessarily make for a bad actor. A functional token with no underlying pyramid scheme is not an ICO. It is a clever mechanism to encourage viral adoption of a chicken-and-egg technology; one that offers enormous public benefit.
Technology Application & Business Model
LoRa can achieve competitive web access speeds at 1~3 Km. Helium hotspots will more likely have mesh-hand-off spacing of 15~20 Km at first. This results in a signal of 5 kbps or less. Depending on how effective are the hotspot and hand-off incentives, Helium may ultimately compete with sky-based WiFi, satellite schemes or community WiFi as a free moderate-speed, internet service.Helium is intended for IOT devices, but can also be used as a last mile layer for user Internet access. During the early build out of infrastructure in any region, it is clearly optimized for low speed IOT communications.
Conclusion:
Helium doesn’t completely satisfy requirements that we set forth in the very first paragraph above. I assume that it uses a proprietary standard to poll and packetize data. (I am not sure of this. Perhaps someone working with the project reach out with a clarification). And at $495 for a long range, low power Helium hotspot/router, it may be a bit early for all but the most bold entrepreneur to experiment with Helium. If you don’t live in a large and densely populated urban area, you are unlikely to find many peers with whom to share spectrum, data and gateways.
But if you open your mind to the possibilities: tools, gadgets and services that can benefit from private networks or municipal infrastructure that was previously the exclusive domain of town governments, railroads and first responders… If you can imagine these things—or a profitable role in accommodating these things—then a personal Helium Hotspot may be in your future.
I plan to jump in with both feet. I will be shaping my career around Helium. It’s a bit early, but that’s the whole point. For me, it is a gamble worth taking.
Particle accelerators like the Large Hadron Collider (LHC) are incredibly useful – and usually incredibly huge – instruments for studying some of the fundamentals of particle physics. But now scientists have managed to squeeze one on to a silicon chip.
It’s nowhere near as powerful as the bigger versions, as you might expect, but the new particle accelerator chip could still be very helpful for researchers who aren’t able to access gigantic particle accelerator setups.
While this first model is only a prototype, the team behind it is hopeful that it’s a first step towards providing a more compact alternative to the well-known massive particle accelerators, including the LHC and the SLAC National Accelerator Laboratory.
