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Archive for the ‘quantum physics’ category: Page 779

May 26, 2016

Doubling down on Schrödinger’s cat

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

Could Yale physicists finally give Schrödinger’s cat a second box to play in proving the superposition of states.


Yale physicists have given Schrödinger’s famous cat a second box to play in, and the result may help further the quest for reliable quantum computing.

Schrödinger’s cat is a well-known paradox that applies the concept of superposition in quantum physics to objects encountered in everyday life. The idea is that a cat is placed in a sealed box with a radioactive source and a poison that will be triggered if an atom of the radioactive substance decays. Quantum physics suggests that the cat is both alive and dead (a superposition of states), until someone opens the box and, in doing so, changes the quantum state.

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May 26, 2016

Synopsis: Position Detector Approaches the Heisenberg Limit

Posted by in categories: electronics, quantum physics

The light field from a microcavity can be used to measure the displacement of a thin bar with an uncertainty that is close to the Heisenberg limit.

Tracking the exact location of an object is important in gravitational-wave detectors and optical cooling techniques. However, quantum physics imposes certain limits on the measurement precision. Tobias Kippenberg and his colleagues at the Swiss Federal Institute of Technology in Lausanne have devised an optomechanical device that measures the displacement of a tiny vibrating bar at room temperature with an uncertainty near the so-called Heisenberg limit. The precision of the sensor is nearly 10,000 times smaller than the zero-temperature fluctuations (zero-point motion) of the bar.

The Heisenberg uncertainty principle says—in practical terms—that any measurement of an object’s position will unavoidably give it a push that disturbs its momentum. To minimize this backaction, researchers have developed systems that couple the position of an object with the light field from an optical cavity.

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May 25, 2016

Large-scale technique to produce quantum dots

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

Nice new method in producing Q-Dots which seems to be more cost effective, efficient and reliable.


Large-scale technique to produce quantum dots.

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May 25, 2016

The quantum world view and vedanta

Posted by in categories: evolution, quantum physics

Luv this article (science meets philosophical theory on the evolution of science); reminds me of an article that one of my Quantum friends shared yesterday on Linkedin Pulse.


Science is the biggest enterprise that man ever created. Of all the living things on this planet, man is the only one that seems to have started thinking about how this world works. To understand that he started this new venture, called Science, which was originally meant just to understand how this world works. Some exceptionally brilliant minds did accidentally stumble upon some understanding of the world’s laws like gravity, buoyancy, and others in the west while Indian sages had realised this much earlier.

Next step was to find out how the world works by doing some experiments. That was the stage when the Churches started obstructing “Science” as this kind of scientific enquiry, the Church felt, might interfere with religious beliefs. That is where the first conflict between religion and science started. The fall out was that scientists subconsciously developed an aversion to the God concept in religion and thus God was kept out of the scientific realm. Let us, therefore, think from now on. Science, then, was more of a hobby for the well to do. The leading lights of that generation were Isaac Newton and Albert Einstein. There were a host of others but less illustrious than these two. Newton’s Laws of deterministic predictability and Einstein’s laws of relativity together founded a world view of “space-time” constraints where everything else out with this space time module was rejected.

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May 25, 2016

Silicon quantum computers take shape in Australia

Posted by in categories: computing, quantum physics

Any technology related company (including medical, consulting, etc.) without Quantum as part of their product & services 5 year roadmap will find themselves obsolete in the next 7 years.


Two blueprints emerge from centre tasked with creating a practical quantum device.

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May 25, 2016

China to combat hackers with launch of quantum communication satellite

Posted by in categories: cybercrime/malcode, quantum physics

Although this states it is to protect China; who will protect us from China’s hacks when they have this.


China is expected to launch the satellite into space in July.

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May 24, 2016

Top international award for UNSW Australia quantum computing chief

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

Love this; Congrats to Michelle Simmons and her work on QC — Superstar females in STEM.


For her world-leading research in the fabrication of atomic-scale devices for quantum computing, UNSW Australia’s Scientia Professor Michelle Simmons has been awarded a prestigious Foresight Institute Feynman Prize in Nanotechnology.

Two international Feynman prizes, named in honour of the late Nobel Prize winning American physicist Richard Feynman, are awarded each year in the categories of theory and experiment to researchers whose work has most advanced Feynman’s nanotechnology goal of molecular manufacturing.

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May 24, 2016

New evidence could break the standard view of quantum mechanics

Posted by in categories: particle physics, quantum physics

Quantum mechanics is difficult to understand at the best of times, but new evidence suggests that the current standard view of how particles behave on the quantum scale could be very, very wrong.

In fact, the experiment hints that an alternative view predicted almost a century ago might have been right this whole time. And before you get too bummed about that, the good news is that, if confirmed, it would actually make quantum mechanics a whole lot simpler to understand.

So let’s step back for a second here and break this down. First thing’s first, this is just one study, and A LOT more replication and verification would be needed before the standard view comes crumbling down. So don’t go burning any text books just yet, okay? Good.

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May 24, 2016

Samsung Electronics To Skip OLED TV And Go Straight To QLED TV

Posted by in categories: electronics, quantum physics

Establishing the trend. Q-dot technology will be in all displays soon.


“Samsung Electronics will skip commercializing OLED for TVs and ho straight to QLED technology, perhaps as soon as 2009. Its strategy is to continue to develop its quantum-dot TVs, which are its current major products, and prepare to commercialize QLED technologies during this time.”

Read More at ET News

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May 24, 2016

Precise atom implants in silicon provide a first step toward practical quantum computers

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

Nice.


Sandia National Laboratories has taken a first step toward creating a practical quantum computer, able to handle huge numbers of computations instantaneously.

Here’s the recipe:

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