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Archive for the ‘quantum physics’ category: Page 759

Jul 29, 2016

Scientia Professor Michelle Yvonne Simmons

Posted by in categories: computing, quantum physics

Professor Michelle Simmons of the Univ. of Sydney is an early pioneer of QC and will go down in history as the 1st Mother of Quantum Computing and a person that all (women and men) can look up to and be a true role model for many in tech and science. I hope to continue to make young girls and women everywhere to learn about her and hopefully they (like me) will consider her a role model to follow.


Fields of research: Quantum Physics, Condensed Matter Physics Campus: Kensington Tags: Expanding Knowledge in the Information and Computing Sciences, Expanding Knowledge in the Physical Sciences.

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Jul 28, 2016

A new Type of Quantum Bit

Posted by in categories: materials, quantum physics

In approaches using conventional semiconductor materials, scientists typically created qubits in the form of individual electrons. However, this caused dephesing, and the information carriers were difficult to program and read. Now, researchers from the University of Basel, Ruhr University Bochum, and the Universite de Lyon have overcome this problem by using holes — instead of electrons — to create qubits.

A new type of quantum bit | university of basel.

A new Type of Quantum Bit | University of Basel

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Jul 28, 2016

White House’s “ADVANCING QUANTUM INFORMATION SCIENCE: NATIONAL CHALLENGES AND OPPORTUNITIES”

Posted by in categories: government, internet, quantum physics, science

Nice paper on QC from the Obama Administration. While reading this paper; I also kept in mind why the US, Europe, Canada, etc. all must accelerate our efforts on QC which is government backed hackers in China, etc. especially since China will have a Quantum Internet and have also accelerated their efforts on QC with their partnership with Australia’s QC efforts which many discoveries on QC has happened.

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Jul 28, 2016

Getting light in shape with metamaterials

Posted by in categories: nanotechnology, quantum physics, supercomputing

A team built a specialized, layered structure with tiny metallic cavities that improves the light conversion efficiency by orders of magnitude.

ncident laser beam (top of the figure)  illuminating an array of nanoscale gold resonators on the surface of a quantum well semiconductor

Artist’s rendering of an incident laser beam (top of the figure) illuminating an array of nanoscale gold resonators on the surface of a “quantum well” semiconductor (slab in figure). (A quantum well is a thin layer that can restrict the movement of electrons to that layer.) The incoming laser beam interacts with the array and the quantum wells and is converted into two new laser beams with different wavelengths. Changing the size, shape, and arrangement of the resonators can be used for beam focusing, beam steering, or control of the beam’s angular momentum. (Image: Sandia National Laboratories)

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Jul 28, 2016

Improving computer graphics with quantum mechanics

Posted by in categories: computing, engineering, quantum physics

Nice article; I do need to mention that more and more screen displays are moving to Q-Dot technology. So, computer graphics is being enriched in multiple ways by Quantum.


Caltech applied scientists have developed a new way to simulate large-scale motion numerically using the mathematics that govern the universe at the quantum level.

The , presented at the International Conference and Exhibition on Computer Graphics & Interactive Techniques (SIGGRAPH), held in Anaheim, California, from July 24–28, allows computers to more accurately simulate vorticity, the spinning motion of a flowing fluid.

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Jul 28, 2016

Chinese satellite is one giant step for the quantum internet

Posted by in categories: government, internet, quantum physics, satellites

Chinese Government launches in the coming weeks their new Quantum Satellite which advances their networks, communications, etc. The question remaining is with Chinese Government backed hackers; what will they do on this technology.


Discussion in ‘China & Far East’ started by onebyone, Jul 27, 2016 at 8:26 PM.

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Jul 28, 2016

Moving beyond semiconductors for next-generation electric switches

Posted by in categories: energy, mathematics, mobile phones, quantum physics, supercomputing

Computers use switches to perform calculations. A complex film with “quantum wells”—regions that allow electron motion in only two dimensions—can be used to make efficient switches for high-speed computers. For the first time, this oxide film exhibited a phenomenon, called resonant tunneling, in which electrons move between quantum wells at a specific voltage. This behavior allowed an extremely large ratio (about 100,000:1) between two states, which can be used in an electronic device as an ON/OFF switch to perform mathematical calculations (Nature Communications, “Resonant tunneling in a quantum oxide superlattice”).

Quantum wells

Efficient control of electron motion can be used to reduce the power requirements of computers. “Quantum wells” (QW) are regions that allow electron motion in only two dimensions. The lines (bottom) in the schematic show the probability of finding electrons in the structure. The structure is a complex oxide (top) with columns (stacked blue dots corresponding to an added element) where the electrons are free to move in only two dimensions. This is a special type of quantum well called a two-dimensional electron gas (2DEG). (Image: Ho Nyung Lee, Oak Ridge National Laboratory)

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Jul 28, 2016

Could Dark Energy Be Caused By A Reaction To What’s In The Universe? (Synopsis)

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

“Another very good test some readers may want to look up… is the Casimir effect, where forces between metal plates in empty space are modified by the presence of virtual particles.” –Gordon Kane

If you ask what the zero-point energy of space itself is, you can sum up all of the quantum fluctuations you can that arise in quantum field theory, and arrive at an absurd answer: 120 orders of magnitude greater than the observed. Yet if you assume that there’s an incredible cancellation and you get exactly zero, that removes the one thing our Universe needs to explain its expansion: dark energy.

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Jul 26, 2016

Pixel-array quantum cascade detector paves the way for portable thermal imaging devices

Posted by in categories: particle physics, quantum physics

Finally, portable thermal imaging devices could be here soon.


The primary source of infrared radiation is heat—the radiation produced by the thermal motion of charged particles in matter, including the motion of the atoms and molecules in an object. The higher the temperature of an object, the more its atoms and molecules vibrate, rotate, twist through their vibrational modes, the more infrared radiation they radiate. Because infrared detectors can be “blinded” by their own heat, high-quality infrared sensing and imaging devices are usually cooled down, sometimes to just a few degrees above absolute zero. Though they are very sensitive, the hardware required for cooling renders these instruments less-than-mobile, energy-inefficient and limits in-the-field applications.

A paper published this week in the journal Optics Express, from The Optical Society (OSA), describes a new type of portable, field-friendly, mid-infrared detector that operates at room temperature. Room-temperature operation, notes Andreas Harrer of the TU-Wien Center for Micro- and Nanostructures, Austria and the first author of the paper, “is essential for detectors to be energy-efficient enough for portable and handheld applications. We want to pave the way to an infrared-detection technology which is flexible in design and meets all requirements for compact integrated field-applicable detection systems.”

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Jul 26, 2016

Quantum dot photosensitizers as a new paradigm for photochemical activation

Posted by in categories: chemistry, quantum physics, solar power, sustainability

Interesting work on solar energy and Q-dot photosensitizers.


Interfacial triplet-triplet energy transfer is used to significantly extend the exciton lifetime of cadmium selenide nanocrystals in an experimental demonstration of their molecular-like photochemistry.

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