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Quantum Mechanics

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Fungal Enzymes, Vanadium, Wearable Sensors, Floating Rocks, and More in the DOE Science News Source

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University of Vienna, Lee Rozema, Quantum Information Science and Quantum Computation, Nature Communications, Quantum Mechanics, mathematical rules, photonic experiment , University of California Berkeley, quantum theories

Quantum Mechanics Is Complex Enough, for Now…

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Physicists have searched for deviations from standard quantum mechanics, testing whether quantum mechanics requires a more complex set of mathematical rules. To do so a research team led by Philip Walther at the University of Vienna designed a new photonic experiment using exotic metamaterials, which were fabricated at the University of California Berkeley. Their experiment supports standard quantum mechanics and allows the scientists to place bounds on alternative quantum theories. The results, which are published in "Nature Communications", could help to guide theoretical work in a search for a more general version of quantum mechanics.

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Brain Development In Children, Neurobiology, Data Analysis, Bioenergy, Lignin, Ecosystem, Environmental Change, model uncertainty, Quantum Mechanics, Atomic Force Microscopy

Story Tips From the Department of Energy’s Oak Ridge National Laboratory, May 2017

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ORNL aids St. Jude’s brain development research with software to speed processing of microscopy images; bottleneck to breakdown lignin for biofuels may occur at plant cell wall surface; predicting how ecosystems respond to environmental change could be more precise through new process method; through quantum mechanical squeezing, researchers designed new concept to increase resolution of atomic force microscopy

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2-D materials, Quantum Computers, Jing Xia

UCI’s New 2-D Materials Conduct Electricity Near the Speed of Light

Physicists at the University of California, Irvine and elsewhere have fabricated new two-dimensional materials with breakthrough electrical and magnetic attributes that could make them building blocks of future quantum computers and other advanced electronics.

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4-D spectral maps, Structure, Quantum Mechanics, Dimensions, spectroscopic, Molecular Structure, Elad Harel, The Journal Of Chemical Physics

‘GAMERS’ Method Creates Unique 4-D Molecular Spectral Maps

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Researchers at Northwestern University have created a new method to extract the static and dynamic structure of complex chemical systems. In this context, “structure” doesn’t just mean the 3-D arrangement of atoms that make up a molecule, but rather time-dependent quantum-mechanical degrees of freedom that dictate the optical, chemical and physical properties of the system. They discuss their work in this week’s The Journal of Chemical Physics.

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SLAC National Accelerator Laboratory, Femtosecond, Quantum Physics

Why Study in Femtoseconds?

The text on this screen may appear stable enough, but every molecule, atom, and electron in it is in constant motion. The laws of quantum physics require that on the atomic scale nothing is ever truly at rest. Nano-sized motion also keeps us warm, cooks our food, lights our smartphones, and enables all of our senses of hearing, sight, smell, taste, and touch.

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quantum information processing, indistinguishable photons, nitrogen impurity centers, Gallium Arsenide, Semiconductors, isoelectronic trap, Michio Iwezawa, Liao Zhang, Yoshiki Sakuma, Yasuaki Masumoto, University of Tsukuba, National Institute for Materials Science, Applied Physics Letters

‘Indistinguishable Photons’ Key to Advancing Quantum Technologies

Indistinguishable photons are critical for quantum information processing, and a group of researchers in Japan is tapping nitrogen impurity centers found within gallium arsenide to generate them -- making a significant contribution toward realizing a large number of indistinguishable single-photon sources.

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Molecules, Quantum Mechanics, complex molecules, Mass Spectrometry, imaging detector, Laser, Laser Pulse, ion imaging, Spectroscopy, Ruaridh Forbes, Varun Suresh Makhija, Kevin Veyrinas, Albert Stolow, Jason Lee, Michael B. Burt, Mark Brouard, Claire Vallance, Iain Wilkinson, Rune Lausten, Paul Hockett, University College London, University of Ottawa, Universit

The Inner Lives of Molecules

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Researchers from Canada, the U.K. and Germany have developed a new experimental technique to take 3-D images of molecules in action. This tool can help scientists better understand the quantum mechanics underlying bigger and more complex molecules. They describe their work in this week’s The Journal of Chemical Physics.

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University of Vienna, quantum race, Winner, loser, macroscopic world, Order, Physics, quantum operations, Superposition, Austrian Academy of Sciences, experimental quantification, Science Advances

In a Quantum Race Everyone Is Both a Winner and a Loser

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Our understanding of the world is mostly built on basic perceptions, such as that events follow each other in a well-defined order. Such definite orders are required in the macroscopic world, for which the laws of classical physics apply. However, in the quantum world orders can be ‘scrambled’. It is possible for different orders of quantum operations to coexist in a superposition. The current work by a team of physicists from the University of Vienna and the Austrian Academy of Sciences is the first experimental quantification of such a superposition. It will be published in an upcoming issue of "Science Advances".







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