FILE PHOTO: Silhouettes of laptop users are seen next to a screen projection of binary code are seen in this picture illustration taken March 28, 2018. REUTERS/Dado Ruvic/Illustration Reuters.
Researchers from Sorbonne University in Paris have achieved a highly efficient transfer of quantum entanglement into and out of two quantum memory devices. This achievement brings a key ingredient for the scalability of a future quantum internet.
A quantum internet that connects multiple locations is a key step in quantum technology roadmaps worldwide. In this context, the European Quantum Flagship Programme launched the Quantum Internet Alliance in 2018. This consortium coordinated by Stephanie Wehner (QuTech-Delft) consists of 12 leading research groups at universities from eight European countries, in close cooperation with over 20 companies and institutes. They combined their resources and areas of expertise to develop a blueprint for a future quantum internet and the required technologies.
A quantum internet uses an intriguing quantum phenomenon to connect different nodes in a network together. In a normal network connection, nodes exchange information by sending electrons or photons back and forth, making them vulnerable to eavesdropping. In a quantum network, the nodes are connected by entanglement, Einstein’s famous “spooky action at a distance.” These non-classical correlations at large distances would allow not only secure communications beyond direct transmission but also distributed quantum computing or enhanced sensing.
Spintronic devices are attractive alternatives to conventional computer chips, providing digital information storage that is highly energy efficient and also relatively easy to manufacture on a large scale. However, these devices, which rely on magnetic memory, are still hindered by their relatively slow speeds, compared to conventional electronic chips.
In a paper published in the journal Nature Electronics, an international team of researchers has reported a new technique for magnetization switching—the process used to “write” information into magnetic memory—that is nearly 100 times faster than state-of-the-art spintronic devices. The advance could lead to the development of ultrafast magnetic memory for computer chips that would retain data even when there is no power.
In the study, the researchers report using extremely short, 6-picosecond electrical pulses to switch the magnetization of a thin film in a magnetic device with great energy efficiency. A picosecond is one-trillionth of a second.
Article. I guess having implants directly on the brain isn’t the only way to have a brain to machine interface. The scientists involved in the study found an alternative by picking up signals through the blood vessels.
It’s not as information packed as a direct brain connection, but it’s not as invasive.
I think it would be a good alternative or even complementary to direct brain implants. Interesting. 😃
Continue reading “A New Way to Plug a Human Brain Into a Computer: via Veins” »
CREATING ARTIFICIAL SKIES IN UNDERGROUND HABITATS ON MARS & MERCURY. This will be an interesting subject for much deliberation in the future: how to best create artificial skies in sealed habitats. Metamaterial vantablack is a surface so perfectly dark that if you stood in a room where the ceiling, walls and floor were covered with it, you would feel like you were floating in black space. Disneyland must get off its butt and create a big room like this. Now a new paint (not quite the opposite of vantablack as it claims) has been invented, which will reflect back nearly 100% of light hitting it, an interesting way to augment existing lighting in a building by painting the ceiling with the stuff.
And here is something which I told you before: if the human eye stares at a totally uniform color, with no discernable features it doesn’t know where to focus, and psychologically can see this as a kind of “sky.” Since there is nothing to focus on, the eye assumes it is the far away sky and focusses to infinity or goes into its least-energetic focusing mode, as in looking at a blank sky.
View a large computer screen with a totally uniform color, through a tube which blocks the edge of the screen from view. You already see this effect with this small experiment.
Continue reading “This Whiter-Than-White Paint Is Like the Opposite of Vantablack” »
We stored the light by putting it in a suitcase so to speak, only that in our case the suitcase was made of a cloud of cold atoms,” says physicist Patrick Windpassinger from Mainz University in Germany. “We moved this suitcase over a short distance and then took the light out again.
The storage and transfer of information is a fundamental part of any computing system, and quantum computing systems are no different – if we’re going to benefit from the speed and security of quantum computers and a quantum internet, then we need to figure out how to shift quantum data around.
One of the ways scientists are approaching this is through optical quantum memory, or using light to store data as maps of particle states, and a new study reports on what researchers are calling a milestone in the field: the successful storage and transfer of light using quantum memory.
Continue reading “In New Milestone, Physicists Store And Transport Light Using Quantum Memory” »
“In a breakthrough study published on February 19th in Nature Biomedical Engineering, researchers connected neural dust implants reduced to 1.7 cubic millimeters to rat sciatic nerves. The implanted device, called the StimDust system, consisted of very few components, which will be scaled down for future applications. A piezoceramic ultrasonic transducer generated power allowing for wireless communication and stimulation. A capacitor stored any excess energy generated from ultrasonic beams. Bipolar stimulating electrodes directly interfaced with the nerve while a cuff attached to a small circuit-board allowed the device to adhere physically to the nerve. These components were sufficient to generate or record nerve-impulses. In anesthetized rodents, they elicited muscular contractions with the StimDust system.”
While Neuralink, Elon Musk’s startup-venture focused on creating a brain-computer interface, garners lots of coverage in the biotechnology space, other bioelectronics ventures continue innovating in this space.
iota Biosciences, a spin-off company from UC Berkley formed in 2017, made news two years ago by securing $15 million in Series A funding and again last year announcing a partnership with Astellas Pharma Inc. Bolstered by studies in rodents, iota Biosciences advances towards their vision. In a press release on their partnership, founders Jose Carmena and Michel Maharbiz commented:
Continue reading “Neural Dust: Millimeter-Sized Brain Stimulators” »
Rock-climb without fear. Play a symphony in your head. See radar with superhuman vision. Discover the nature of consciousness. Cure blindness, paralysis, deafness, and mental illness. Those are just a few of the applications that Elon Musk and employees at his four-year-old neuroscience company Neuralink believe electronic brain-computer interfaces will one day bring about.
None of these advances are close at hand, and some are unlikely to ever come about. But in a “product update” streamed over YouTube on Friday, Musk, also the founder of SpaceX and Tesla Motors, joined staffers wearing black masks to discuss the company’s work toward an affordable, reliable brain implant that Musk believes billions of consumers will clamor for in the future.
Continue reading “Elon Musk’s Neuralink is neuroscience theater” »
