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Archive for the ‘quantum physics’ category: Page 776

Aug 11, 2016

Quantum dots with impermeable shell used as a powerful tool for “nano-engineering”

Posted by in categories: 3D printing, chemistry, engineering, nanotechnology, quantum physics, wearables

I never get tired of talking about the many uses for Q-dot technology. One area that has me even more intrigued is how it is used in crystallized formations. I expect to see more and more experimenting on crystalized formations on many fronts including complex circuitry for performance and storage.

And, with synthetic technology today plus 3D printing along with Q-dots we could (as I have eluded to many times over several months) truly begin to see some amazing technology be developed on the wearable tech front.

Wearables could include synthetic circuitry stones in various accessories to not only store information, but also serve as another form of unique id because in synthetic stones we have been able (like in nature) create complex crystalized formations that are each unique/ 1 of a kind like a unique finger print, or iris of an eye. I expect to see some very interesting things coming in this space.

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Aug 11, 2016

Toward practical quantum computers

Posted by in categories: computing, quantum physics

Built-in optics could enable chips that use trapped ions as quantum bits…


Researchers from MIT and MIT Lincoln Laboratory report an important step toward practical quantum computers, with a paper describing a prototype chip that can trap ions in an electric field and, with built-in optics, direct laser light toward each of them.

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Aug 10, 2016

Quantum computing and cryptocurrencies: Are Steemit and bitcoin safe?

Posted by in categories: bitcoin, computing, cryptocurrencies, encryption, quantum physics, security

Article repeats a lot of the knowns on QC such as bit v. Qubit; and finally provides some good info on pros and cons of Bitcoin and Lamport signatures technique with QC. However, the author didn’t seem to mention any of the work that D-Wave for example is doing with Block chaining. Also, I saw no mention of the work by Oxford on the logic gate which improve both the information processing performance and the security of information transmissions.


In a classical computer bits are used that can either be 0 or 1. In a quantum computer these bits are replaced with Qubits (quantum bits). These Qubits can be 0 or 1, or both at the same time. This is caused by a phenomenon in the quantum realm called superposition. At scales the size of an atom and small molecules, the spin of particles is not determined until it is observed. A pair of Qubits can be in any quantum superposition of 4 states, and three Qubits in any superposition of 8 states. In general, a quantum computer with n Qubits can be in a superposition of up to 2^n different states simultaneously (this compares to a normal computer that can only be in one of these 2^n states at any one time). Because of this, a quantum computer is able to perform computations at the same time, while classical computers perform computations one at a time.

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Aug 10, 2016

What makes the spin flip over?

Posted by in categories: nanotechnology, quantum physics

The Einstein-de-Haas effect shows that magnetism results from the angular momentum of electrons and is considered as the macroscopic evidence of electron spin. Researchers at Karlsruhe Institute of Technology (KIT) and at the Institut NÉEL at the CNRS in Grenoble were the first to investigate this effect for an individual spin and formulated it as the new “Quantum Einstein-de-Haas effect”. In Nature Communications, they report on their work (“Quantum Einstein-de Haas effect”).

The mechanical properties of the carbon nanotube (black)  cause the spin (orange)  of a molecule (green and red)  to flip over

The mechanical properties of the carbon nanotube (black) cause the spin (orange) of a molecule (green and red) to flip over. (Illustration: Christian Grupe)

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Aug 10, 2016

Hydrogen molecule falls to quantum computer

Posted by in categories: computing, quantum physics

Extra bits —

Hydrogen molecule falls to quantum computer.

Quantum computer calculates ground state of hydrogen with just two qubits.

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Aug 9, 2016

Laser-firing chip signals huge leap for quantum computing

Posted by in categories: computing, quantum physics

Although I shared this news yesterday, this article provide some added details.


Efforts towards realising a practical quantum computer have been given a huge boost after a team of researchers made successful advances in qubit miniaturisation.

Qubits or quantum bits are the basic building blocks behind quantum computing and hold the capacity to process enormous computational tasks in real-time. However, working out how to miniaturise the technology remains a huge obstacle to quantum computer development.

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Aug 9, 2016

DARPA competition sees dawn of autonomous IoT hacking

Posted by in categories: cybercrime/malcode, internet, military, quantum physics, robotics/AI

Glad folks realizes and admit to the risks; however, I stand by my argument until the underpinning technology is still tied to dated digital technology; it will be hacked by folks like China who are planning to be on a new Quantum network and platforms. Reason why all countries must never lose sight of replacing their infrastructure and the net with Quantum technology.


A team of researchers from Pittsburgh has won DARPA’s Cyber Grand Challenge – a competition billed as the ‘world’s first automated network defense tournament.’ The implications for the Internet of Things (IoT) are grave, as the machines on display threaten to ravage the already flaky state of IoT security.

DARPA, the Department of Defense’s (DoD) Defense Advanced Research Projects Agency, is a wing of the US military that investigates how the latest technological breakthroughs can be put to use on the battlefield. With nation-state cybersecurity now declared a new front in conventional warfare, militaries around the world will be flocking to gather the tools needed to exert force in this new medium.

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Aug 8, 2016

DARPA Autonomous Bug-Hunting Bots Don’t Need Human Hackers Anymore: Are Bots The Future Of Cybersecurity?

Posted by in categories: cybercrime/malcode, information science, quantum physics, robotics/AI

I already voiced my concerns of this technology in the hands of criminals and terrorists. If we can have it so can others. Only when QC and a Quantum net is in place will we be truly protected with bots.


Cybersecurity could soon be another place where bots become invaluable for experts. DARPA recently organized The Cyber Grand Challenge, where computer algorithms showed how easy it is to clean up vulnerabilities in code written by humans. ( DARPA )

The Cyber Grand Challenge took place under DARPA patronage, and it is good to see how preoccupied the U.S. Department of Defense is with cybersecurity.

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Aug 8, 2016

Artificial Intelligence Just Changed the Future of Information Security – Defense One

Posted by in categories: computing, quantum physics, robotics/AI, security

I will like to see how this stacks against China’s Quantum net, QC platform, AI, and hackers in the future. Not sold at this point until we truly have a QC infrastructure in place.


At DARPA’s Cyber Grand Challenge, bots showed off their ability to help a world wallowing in vulnerable code.

LAS VEGAS, Nev. — Mayhem ruled the day when seven AIs clashed here last week — a bot named Mayhem that, along with its competitors, proved that machines can now quickly find many types of security vulnerabilities hiding in vast amounts of code.

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Aug 8, 2016

Diamond-based light sources will lay a foundation for quantum communications of the future

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

Dmitry Fedyanin from the Moscow Institute of Physics and Technology and Mario Agio from the University of Siegen and LENS have predicted that artificial defects in the crystal lattice of diamond can be turned into ultrabright and extremely efficient electrically driven quantum emitters. Their work, published in New Journal of Physics, demonstrates the potential for a number of technological breakthroughs, including the development of quantum computers and secure communication lines that operate at room temperature.

The research conducted by Dmitry Fedyanin and Mario Agio is focused on the development of electrically driven single-photon sources—devices that emit when an electrical current is applied. In other words, using such devices, one can generate a photon “on demand” by simply applying a small voltage across the devices. The probability of an output of zero photons is vanishingly low and generation of two or more photons simultaneously is fundamentally impossible.

Until recently, it was thought that quantum dots (nanoscale semiconductor particles) are the most promising candidates for true single-photon sources. However, they operate only at very low temperatures, which is their main drawback – mass application would not be possible if a device has to be cooled with liquid nitrogen or even colder liquid helium, or using refrigeration units, which are even more expensive and power-hungry. At the same time, certain point defects in the crystal lattice of diamond, which occur when foreign atoms (such as silicon or nitrogen) enter the diamond accidentally or through targeted implantation, can efficiently emit single photons at room temperature. However, this has only been achieved by optical excitation of these defects using external high-power lasers. This method is ideal for research in scientific laboratories, but it is very inefficient in practical devices.

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