БЛОГ

Archive for the ‘quantum physics’ category: Page 766

Jul 11, 2016

Researchers develop faster, precise silica coating process for quantum dot nanorods

Posted by in categories: mobile phones, nanotechnology, quantum physics

Faster and better method around Q-dots development which ultimately extends the quality of Quantum Dots plus mass production of Q-Dots is much faster through this new method. Hoping this causes the costs of new cameras, phone displays, monitors/ video displays are now able to be created more cheaply and in larger quantities.


Materials researchers at North Carolina State University have fine-tuned a technique that enables them to apply precisely controlled silica coatings to quantum dot nanorods in a day — up to 21 times faster than previous methods. In addition to saving time, the advance means the quantum dots are less likely to degrade, preserving their advantageous optical properties.

Quantum dots are nanoscale semiconductor materials whose small size cause them to have electron energy levels that differ from larger-scale versions of the same material. By controlling the size of the quantum dots, researchers can control the relevant energy levels — and those energy levels give quantum dots novel optical properties. These characteristics make quantum dots promising for applications such as opto-electronics and display technologies.

Continue reading “Researchers develop faster, precise silica coating process for quantum dot nanorods” »

Jul 9, 2016

China Nears Launch Of Its “Hack-Proof” Quantum Satellite

Posted by in categories: cybercrime/malcode, quantum physics, satellites

All seems to be on schedule this time for China’s Quantum Satellite Launch in the next few weeks. Google, hope you’re ready.


China will be launching its quantum satellite next month, answering longstanding questions about whether or not a global quantum network is feasible.

Read more

Jul 8, 2016

HTTPS crypto’s days are numbered. Here’s how Google wants to save it

Posted by in category: quantum physics

I am really glad people are focusing because August is going to be a big month for China and their state funded groups.


Coming to a browser near you, new, post-quantum crypto.

Read more

Jul 8, 2016

Scientists obtain evidence of many-body localization in a closed quantum system

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

Finding evidence of many-body localization in a closed quantum system.


During equilibration ordinary many-body systems lose all information about the initial state. Every morning we experience an example for this behaviour. Milk poured into a cup of coffee mixes perfectly and after some time it is impossible to say how exactly the two fluids were put together. The same behaviour holds for almost all quantum systems. However, recently a new phenomenon called “many-body localization” has been predicted theoretically, which allows well insulated quantum systems to preserve memory of the initial state forever. Now a team of scientists around Dr. Christian Groß and Professor Immanuel Bloch (Director at MPQ and Chair of Quantum Optics at LMU Munich), in cooperation with David Huse (Princeton University), has obtained evidence of such a behaviour in a two-dimensional quantum system of cold rubidium atoms trapped in an optical lattice.

The scientists observed that – beyond a certain degree of disorder imprinted on the particle ensemble in the beginning – the system would relax into a steady state still containing detailed microscopic information about its past. “We were able to observe the transition from a thermalized state into a many-body localized phase”, Christian Groß points out. “It is the first observation of that kind in a regime that is not accessible with state-of-the-art simulations on classical computers.” The experiment is not only of fundamental interest; the results might also lead to new ways for storing quantum information.

Continue reading “Scientists obtain evidence of many-body localization in a closed quantum system” »

Jul 8, 2016

Could the Big Bang have been more of a Big Bounce?

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

When the bang became a bounce.


How the universe began is one of the most brain-breaking questions you could possibly ask, and the Big Bang is probably the answer most people accept. But what if the infinitely dense point from which the entire universe burst forth wasn’t the beginning of everything, but merely the middle of an ongoing cycle? That’s the theory of the Big Bounce, which suggests that the universe regularly cycles through periods of expansion and contraction, meaning the Big Bang may have been preceded by an earlier universe collapsing in on itself. A new study details how this might be possible.

The idea of the Big Bounce has been bouncing around since 1922, but explaining just how the universe transitions between expanding and contracting has always been an issue. What’s to stop a universe just contracting into a point and collapsing completely? According to researchers from Imperial College London and the Perimeter Institute for Theoretical Physics in Canada, it may be the same quantum mechanics that prevent atoms from deteriorating into nothing.

Continue reading “Could the Big Bang have been more of a Big Bounce?” »

Jul 8, 2016

Versatile microwave-driven trapped ion spin system for quantum information processing

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

More steps forward for QC through the discovery of a versatile effective spin system suitable for quantum simulations and universal quantum computation.


Using trapped atomic ions, we demonstrate a tailored and versatile effective spin system suitable for quantum simulations and universal quantum computation. By simply applying microwave pulses, selected spins can be decoupled from the remaining system and, thus, can serve as a quantum memory, while simultaneously, other coupled spins perform conditional quantum dynamics. Also, microwave pulses can change the sign of spin-spin couplings, as well as their effective strength, even during the course of a quantum algorithm. Taking advantage of the simultaneous long-range coupling between three spins, a coherent quantum Fourier transform—an essential building block for many quantum algorithms—is efficiently realized. This approach, which is based on microwave-driven trapped ions and is complementary to laser-based methods, opens a new route to overcoming technical and physical challenges in the quest for a quantum simulator and a quantum computer.

Read more

Jul 8, 2016

Air Force Seeks Ideas for How Quantum Computing Can Help Warfighters

Posted by in categories: government, information science, military, particle physics, quantum physics, supercomputing

Listen up all my QC buddies; the air force wants to hear from you. You have QC ideas for fighter jets they want you.

Guess I need to submit them some of mine.


The Air Force wants white papers that describe new ways quantum computing could help achieve its mission, according to an amended Broad Agency Announcement posted Friday. Eventually, the government could provide a test-bed where a contractor might install, develop and test a quantum computing system, according to the announcement.

Last year, the Air Force announced it had about $40 million available to fund research into, and the eventual maintenance and installation of a quantum system — a branch of emerging computing technology that relies on the mechanics of atomic particles to process complex equations.

Continue reading “Air Force Seeks Ideas for How Quantum Computing Can Help Warfighters” »

Jul 8, 2016

We might finally have a way to build circuits for the world’s first quantum computers

Posted by in categories: computing, quantum physics

Another article on QC where the author is not well connected or knowledgeable about the details on QC’s advancement on entanglement. I suggest the author to learn about the use of Synthetic Diamonds in controlling and managing entanglement plus we now have a way to detect & trace high-dimensional entanglement that I shared 20 days ago. I suggest if authors wish to write on QC please make sure that you have the latest information so that your better informed.


The computers of today have just about hit their limits, and scientists around the world are scrambling to build the first viable quantum computer — a machine that could increase processing speeds 100-million-fold.

The biggest challenge in scaling up a quantum computer is figuring out how to entangle enough quantum bits (qubits) to perform calculations, but a team of engineers in the US say they might finally have a solution.

Continue reading “We might finally have a way to build circuits for the world’s first quantum computers” »

Jul 8, 2016

New record in microwave detection

Posted by in categories: computing, nanotechnology, quantum physics

Aalto University scientists have broken the world record by fourteen fold in the energy resolution of thermal photodetection.

The record was made using a partially superconducting microwave detector. The discovery may lead to ultrasensitive cameras and accessories for the emerging quantum computer.

Artistic image of a hybrid superconductor-metal microwave detector

Continue reading “New record in microwave detection” »

Jul 8, 2016

How Feynman Diagrams Almost Saved Space

Posted by in category: quantum physics

Quantum theory amplified Maxwell’s revolution.


Richard Feynman’s famous diagrams weren’t just a way to do calculations. They represented a deep shift in thinking about how the universe is put together.

Read more