Feature Channels: Quantum Mechanics

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For the first time, scientists publish results on a new chip composed of diamond and lithium niobate. The results demonstrate the combination as a promising candidate for quantum devices.

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The electron microscope is one of the most widely used research tools in modern science, playing a pivotal role in virtually all areas of natural science, as well as across a broad range of technologies from basic research to industry.

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For the first time, a team of Princeton physicists have been able to link together individual molecules into special states that are quantum mechanically “entangled.”

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A lone ranger riding off into the sunset might say something sage and vague, such as “a man is only as good as his word.” But these gritty prophets never said anything about verifying a man’s — or anyone else’s — word in the wild frontiers of the digital or quantum era.

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Photonic anomalous Floquet topological insulators (AFTIs) enable perfect hopping of quantum states but usually support only one kind of chiral edge modes.

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A sharing session on 3 October, featuring Professor Serge Haroche, Chairman of Hong Kong Institute for Advanced Study (HKIAS) and Nobel Laureate in Physics (2012), sheds light on the inter-relationship between teaching and research.

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Professor Hong Ding, Chair professor of Tsung-Dao Lee Institute, Shanghai Jiao Tong University delivered the HKIAS Distinguished Lecture entitled “Iron-based superconductors as a new Majorana playground” on 18 October 2023.

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Tina Brower-Thomas of Howard University and Kenneth Evans-Lutterodt of Brookhaven Lab’s National Synchrotron Light Source II (NSLS-II), a DOE Office of Science User Facility, were recently awarded a $1.5 million grant through the Department of Defense’s University Instrumentation Program (DURIP), sponsored by the Office of Naval Research.

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Wits Structured Light research amongst top 30 advances in optics worldwide in 2023: New approach to studying complex light features on the cover of Optica’s Optics and Photonics News.

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An international research team led by quantum physicist Markus Arndt (University of Vienna) has achieved a breakthrough in the detection of protein ions: Due to their high energy sensitivity, superconducting nanowire detectors achieve almost 100% quantum efficiency and exceed the detection efficiency of conventional ion detectors at low energies by a factor of up to a 1,000.

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An 170-year-old law describing the ratio of heat conductivity to electronic conductivity in metals was thought not to apply to quantum materials. Now theoretical physicists suggest that the Wiedemann-Franz law does, in fact, apply to one class of quantum materials -- the copper oxides, or cuprates.

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A future quantum network may become less of a stretch thanks to researchers at the U.S. Department of Energy’s (DOE) Argonne National Laboratory, the University of Chicago and Cambridge University.

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Strontium ruthenate is a superconductor that gives rise to a number of questions. Researchers of Karlsruhe Institute of Technology (KIT) and Max Planck Institute for Chemical Physics of Solids (MPI CPfS), Dresden, have now found that mechanical pressure enhances superconductivity and, at the same time, facilitates deformation of the material.

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Jefferson Lab nuclear physicist Alexandre Deur has been named an American Physical Society Fellow for the study of the spin structure of the nucleon.

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New calculations predicting the spatial distributions of the charges, momentum, and other properties of the quarks within protons found that the up quarks are more symmetrically distributed and spread over a smaller distance within the proton than the down quark. The results imply that these two types of quarks contribute differently to a proton’s properties.

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A new kind of "wire" for moving excitons, developed at the University of Michigan, could help enable a new class of devices, perhaps including room temperature quantum computers.

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Researchers have developed a novel gate design that provides fast control of the flow of coherent information in electromagnonic devices. The design could be the basis for next-generation classical and quantum circuitry.

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Particle collisions produce quarks and gluons that interact in structured ways. Scientists have for the first time directly observed a predicted “dead cone" in this structure. This finding helps to confirm a feature of the theory of strong interactions, which explains how quarks and gluons form protons and neutrons.