Quantum Mechanics News

Magneto-Optical Trapping of Strontium Monofluoride

August 21, 2014

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Physicists Chilled Molecules to Very Near to Absolute Zero

Using magneto-optical trapping, Yale physicists cooled molecules of strontium monofluoride to 2.5 thousandths of a degree above absolute zero, the lowest temperature yet achieved by direct cooling of a molecule. It’s official. Yale physicists have chilled the world’s coolest molecules. The tiny titans in question are bits of strontium monofluoride, dropped to 2.5 thousandths of […]

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Physicists Unveil New Technology to Study Atomic Vibration in Nanomaterials

August 19, 2014

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New Technology Offers Better Understanding of Small Clusters of Atoms

Using new computer technology based on gaming machines, physicists were able to use a combination of molecular dynamics and quantum mechanics calculations to model the atomic vibration of individual atoms in nanomaterials. Physicists at the University of York, working with researchers at the University of Birmingham and Genoa, have developed new technology to study atomic […]

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Physicists Observe Quantum Criticality in a New Class of Materials

June 5, 2014

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A New Discovery of Quantum Critical Points

Physicists have discovered new “quantum critical points” in a class of iron superconductors known as “oxypnictides,” furthering their understanding of quantum criticality. Quantum criticality, the strange electronic state that may be intimately related to high-temperature superconductivity, is notoriously difficult to study. But a new discovery of “quantum critical points” could allow physicists to develop a […]

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Researchers Observe What Happens During a Quantum Phase Transition

April 7, 2014

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Researchers Observe What Happens During a Quantum Phase Transition

In a newly published study, researchers observe what happens during a quantum phase transition, and compare the “quantum melting” of the magnetic structure with the classical “thermal melting” phase transition. When ice is warmed, the water molecules forming its structure vibrate more and more vigorously until finally the forces between them are no longer strong […]

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Researchers Entangle Two Independent Photons with Different Frequencies

April 2, 2014

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Researchers Entangled Two Independent Photons with Different Frequencies for the First Time

Using time-resolved measurement and active feed forward, researchers from the University of Science and Technology of China have entangled two independent photons of different colors for the first time. Entanglement has been capturing the imagination of scientists as well as the public ever since it first emerged from the newly minted quantum mechanics formalism eight […]

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Quantum Mechanics May Lead to an Ultra-Secure Internet

March 25, 2014

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Quantum Mechanics May Lead to Ultra Secure Internet

Researchers give theoretical proof that quantum mechanics may lead to an ultra-secure internet. Einstein’s skepticism about quantum mechanics may lead to an ultra-secure internet suggests a new paper by researchers from Swinburne University of Technology and Peking University. Associate Professor Margaret Reid from Swinburne’s Center for Quantum and Optical Science said Einstein’s reservations about quantum […]

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Researchers Discover the First Direct Evidence of Cosmic Inflation

March 18, 2014

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Researchers Find Direct Evidence of Cosmic Inflation

Researchers have discovered the first direct evidence of cosmic inflation, confirming a deep connection between quantum mechanics and general relativity. Cambridge, Massachusetts – Almost 14 billion years ago, the universe we inhabit burst into existence in an extraordinary event that initiated the Big Bang. In the first fleeting fraction of a second, the universe expanded […]

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Researchers Combine Excited States of Two Materials into a New Quantum Mechanical State

March 3, 2014

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Photon Glue Enables a New Quantum Mechanical State

A team of researchers has taken the excited states of two principally different materials and combined them into a new quantum mechanical state that shares their best properties. Ann Arbor — Like a spring connecting two swings, light can act as photon glue that binds together the quantum mechanical properties of two vastly different materials. […]

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Researchers Propose Using Distant Quasars to Test Bell’s Theorem

February 20, 2014

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Distant Quasar ULAS-J1120+0641

A team of researchers has proposed a practical scheme to use photons from causally disconnected cosmic sources to set the detectors in an experimental test of Bell’s inequality. In a new paper, MIT researchers propose an experiment that may close the last major loophole of Bell’s inequality — a 50-year-old theorem that, if violated by […]

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Ballistic Transport in Graphene Nanoribbons Suggests New Type of Graphene-Based Electronics

February 6, 2014

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Ballistic Transport in Graphene Nanoribbons

A newly published study from Georgia Institute of Technology reveals that ballistic transport in graphene nanoribbons could result in a new class of coherent electronic devices. Using electrons more like photons could provide the foundation for a new type of electronic device that would capitalize on the ability of graphene to carry electrons with almost […]

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New Quantum Dots Design for Solotronics

January 27, 2014

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Solotronics Electronics Operating on a Single Atom Level

Researchers at the University of Warsaw have created and studied two new types of solotronic structures, including the world’s first quantum dots containing single cobalt ion. Electronic systems operating on the level of individual atoms would seem to be the natural consequence of efforts to achieve ever-greater miniaturization. Already now, we are able to control […]

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Direct Measurement Technique Offers an Alternative to Quantum Tomography

January 20, 2014

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Direct Measurement Technique Determines the State of a Quantum System

In a new study, researchers demonstrate “direct measurements” of the quantum state associated with the orbital-angular momentum, showing that direct measurement offers an exciting alternative to quantum tomography. Until recently measuring a 27-dimensional quantum state would have been a time-consuming, multistage process using a technique called quantum tomography, which is similar to creating a 3D […]

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