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Archive for the ‘computing’ category: Page 700

Jul 14, 2016

Synopsis: Making Hard Problems for Quantum Computers

Posted by in categories: computing, information science, quantum physics

Researchers have developed a computer algorithm that doesn’t solve problems but instead creates them for the purpose of evaluating quantum computers.

The desire for quantum computers stems from their potential to solve certain hard problems faster than classical computers. But those bragging rights haven’t actually been earned yet, as no experiment has shown this presumed speedup. Researchers from the University of Southern California, Los Angeles, and the Complutense University of Madrid, Spain, have devised an algorithm that generates extra hard problems that could offer quantum computers the chance to prove their worth.

The problems that the team focused on belong to the general class of optimization problems. The main example is the Ising model, which describes the interaction of a large number of spins within a lattice. The goal is to find the ground state, which is the orientation of spins that minimizes the interaction energy. The problem is computationally hard because there are many local minima (pseudo-ground-states) that can fool a search algorithm.

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Jul 14, 2016

In Nanolasers, A Little Impurity Goes A Long Way

Posted by in categories: computing, internet, particle physics, quantum physics

How zinc atoms improved Nanolaser light emission which could lead to the development of low-cost biomedical sensors, quantum computing and faster internet.


By adding impurities in the form of zinc atoms, researchers have improved nanolaser light emission by a hundredfold.

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Jul 13, 2016

DNA Origami Used To Create A Miniaturized Version Of Van Gogh’s ‘Starry Night’

Posted by in categories: biotech/medical, computing, nanotechnology

The researchers say that the monochrome painting — a dime’s width across — is a proof-of-concept that the extremely precise technique can be used to build nanoscale chip-based devices like computer circuits, conductive carbon nanotubes, and for extremely efficient targeted drug delivery.

In order to reproduce the painting, the researchers used a technique first described by Rothemund and colleagues at IBM in 2009. The first step of the process involves folding DNA strands to create the desired shape, with short “staple strands” being used to literally staple the molecules. Then this pattern, which, at this stage, is floating in a saline solution, is poured into patches on a chip whose shapes match the DNA origami’s.

The folded DNA now acts as scaffolding onto which researchers then install fluorescent molecules inside microscopic light sources called photonic crystal cavities (PCC) — much like putting light bulbs into lamps.

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Jul 13, 2016

Quantum is Coming

Posted by in categories: computing, encryption, quantum physics

Google to run Chrome Canary experimentally for the next two years to address post-quantum cryptography.


Alphabet’s forthcoming Chrome Canary browser is just the “canary” in the coalmine—quantum computing is coming faster than you might think.

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Jul 13, 2016

10 Predictions About the Future That Should Scare the Hell Out of You

Posted by in categories: computing, existential risks, futurism

As far as the whole mind-to-computer thing I totally agree.

The name of the game, for me at least, when it comes to this type of thing is continuity of consciousness. Without that you are nothing more than a copy of another person, not the person themselves. That said, if there were to be a very, very slow process where your natural neurons are replaced by artificial ones, with both types working together seamlessly, THEN I’d be first in line.


The future looks bright, except when it doesn’t. Here are 10 exceptionally regrettable developments we can expect in the coming decades.

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Jul 13, 2016

Researchers Develop A Universal Quantum Gate

Posted by in categories: computing, particle physics, quantum physics

The universal quantum gate to enable long distance communications with QC without degradation.


Scientists have now developed a universal quantum gate, which could become the key component in a quantum computer.

Light particles completely ignore each other. In order that these particles can nevertheless switch each other when processing quantum information, researchers at the Max Planck Institute of Quantum Optics in Garching have now developed a universal quantum gate. Quantum gates are essential elements of a quantum computer. Switching them with photons, i.e. light particles, would have practical advantages over operating them with other carriers of quantum information.

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Jul 13, 2016

Air Force wants to leap ahead in quantum computing

Posted by in categories: computing, military, quantum physics

US AF does need to get onboard quickly or be left in the dust.


Quantum computing could be a competitive advantage for the U.S. military, and the Air Force Research Lab wants to keep pace.

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Jul 12, 2016

Microfluidic Chips Made of Silk Replicate Human Tissues for Drug Testing, Implantable Applications

Posted by in categories: bioengineering, biotech/medical, computing

At the National Institute of Biomedical Imaging and Bioengineering (NIBIB) and Tufts University a team has developed a microfluidic chip that mimics human tissue for use in drug testing applications. The chip is based on a silk gel that overcomes the limitations of polydimethylsiloxane (PDMS), a silicon material widely used to host living cells within microfluidic devices. As an example, PDMS has problems handling lipids, absorbing them instead of letting them move freely along with other nearby compounds and so not applicable with lipid-based compounds. Additionally, PDMS is not biodegradable and so a small device based on it can’t easily be used as an implantable. Silk, on the other hand, just needed a bit of engineering to make a candidate that overcomes many of PDMS’s limitations.

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Jul 12, 2016

Using brain signals instead of passwords to unlock computers

Posted by in categories: computing, neuroscience

Good; and as I had hope it could be done for many years.


Recalling a favorite song could be enough to unlock computers one day. All you’ll need is a tiny earbud to register the electro-brainwaves, researchers say.

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Jul 12, 2016

A New Design Strategy for Better Lithium Oxygen Batteries

Posted by in categories: chemistry, computing, transportation

Yale researchers have devised a method that brings marketable Li-O2 batteries closer to reality, improving both the batteries’ performance and the ability to study them.

In recent years, lithium-oxygen batteries have intrigued researchers with their potential. They can store at least two to three times the energy as lithium-ion batteries can, which are the current standard for consumer electronics, so laptops could theoretically run longer on a single charge and electric cars would drive farther.

But they’re not quite there yet. For now, Li-O2 batteries operate sluggishly and have short lives. Compounding matters, it’s hard to get a sense of how to fix that because figuring out the exact nature of their chemistry has proved tricky.

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