Quantum photonics could be a pivotal part of future quantum technology if the right materials can be created, a new review paper has found.
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Quantum photonics could be a pivotal part of future quantum technology if the right materials can be created, a new review paper has found. Go to Source We are continuously sending information to each other, transmitting zeros and ones through a giant network of connected computers and devices. Scientists are now trying to extend this familiar concept of the internet to the quantum realm, looking for an efficient way to exchange quantum rather than classical information: qubits instead of bits. The motivation […] A Husker research team’s latest research could open the door to broader use of a class of materials whose electrical properties may someday power next-generation electronics, high-density energy storage, improved computer memory and new strategies for cooling. Go to Source An electron’s charge is normally fixed, like a coin you can’t break into pieces. But if electrons are cooled close to absolute zero and trapped in a two-dimensional layer under a powerful magnetic field, they organize into a collective state of “quasiparticles” that seem to hold only a fraction of an electron’s charge. Go to […] Classical computers can temporarily store the information required to perform specific tasks in a short-term memory component known as RAM (random access memory). This component allows computer processors to retrieve information from a chosen location without searching through all stored data. Go to Source A simplified cosmological model suggests that decoherence can suppress quantum tunneling, effectively locking fields into the vacuum state they have reached. Go to Source Strike a bell, and it rings with a pitch and a fading that tell you about the bell: its size, its shape, the metal it is made of. Black holes ring too. When two merge, the newborn black hole shivers and sheds gravitational waves in a brief, dying chord, and since 2015, gravitational-wave detectors have […] Behind every secure online transaction or encrypted message lies a string of completely unpredictable numbers. A team of physicists has now proposed a theoretical way around a long-standing roadblock, opening the door to next-generation security chips that protect everyday data without slowing performance. Go to Source Quantum materials do things ordinary materials cannot. They carry current without any loss, or conduct only along their outer edge while the inside insulates. Future quantum computers and quantum sensors will run on materials like these. To improve them, researchers need to see exactly where currents and magnetic fields run at the nanoscale. Go to […] Superconductors can carry electrical current without resistance, but only up to a maximum value known as the critical current. The critical current is a crucial figure of merit for applications, and materials science has long been focused on increasing this limit. Researchers at the Max Planck Institute for the Structure and Dynamics of Matter (MPSD) […] Researchers at the Research Center for Materials Nanoarchitectonics (MANA), a center within Japan’s National Institute for Materials Science (NIMS), discovered that atomic-scale steps can guide superconducting vortices in an ultrathin superconductor. Go to Source Twistronics has become a new alchemy of materials. By choosing atomically thin layers, stacking them and changing their relative angle, researchers can create electronic behavior absent from the original ingredients. Twisted graphene and transition metal dichalcogenides have already yielded superconductivity and fractional Chern insulators, states with fractionally charged excitations. One of physics’ most active frontiers […] When water drains from a bathtub, a whirlpool often forms above the drain, and its narrow core can start to wobble and twist. For almost 150 years, physicists have predicted that these wobbles can become turbulent, passing energy from large ripples down to ever smaller ones. Until now, however, this “Kelvin-wave turbulence” had never been […] A researcher from Sejong University has used a new theory of gravity proposed by Erik Verlinde to predict the observed central surface density of dark matter. The study was published in Physics of the Dark Universe on Sept. 20. Go to Source Scientists have shown that the two exponents (inelastic scattering exponent and dephasing exponent) commonly used to describe electron scattering in graphene do not necessarily follow the same behavior. Using gated epitaxial graphene, a multi-institutional team of researchers independently extracted the two exponents through current-heating measurements and weak-localization analysis. The contrasting gate-voltage dependence provides evidence that […] |
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