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“#’Quantum negativity’ can power ultra-precise measurements” Quantum laser light is shone onto a chemical molecule that we wish to measure. Then the light passes our “magic” quantum filter. This filter discards a lot of light, whilst condensing all useful information in weak light that finally reaches the camera detector. Credit: Hugo Lepage Scientists have found…
“#Solving materials problems with a quantum computer” Artistic rendering of atomic structure of silicon carbide crystal showing defect (purple circle) and region of interest identified with quantum mechanical theory (silver sphere). Credit: University of Chicago Quantum computers have enormous potential for calculations using novel algorithms and involving amounts of data far beyond the capacity of…
“#Probing the properties of magnetic quasi-particles” Credit: CC0 Public Domain Researchers have for the first time measured a fundamental property of magnets called magnon polarization—and in the process, are making progress towards building low-energy devices. The existence of magnon polarization has been a theoretical idea in physics for almost 100 years but no one has…
“#Ferried across: Figuring out unconventional spin transport in quantum spin liquids” The vertices of this honeycomb network represent sites with two possible spin states. One intriguing property of this model is that a magnetic pulse applied in the left shaded region causes spin changes in the right shaded regions but not in the middle portion….
“#Experimental optimal verification of entangled states using local measurements” Credit: Pixabay/CC0 Public Domain Quantum information is a field where the information is encoded into quantum states. Taking advantage of the “quantumness” of these states, scientists can perform more efficient computations and more secure cryptography compared to their classical counterparts. A team led by Prof. Guo…
“#Manipulating non-magnetic atoms in a chromium halide enables tuning of magnetic properties” The atomic landscape of chromium halides are illustrated. The magnetic chromium atoms appear as gray spheres and the non-magnetic ligand atoms as green (chlorine), orange (bromine), and magenta (iodine) spheres. Credit: Fazel Tafti The magnetic properties of a chromium halide can be tuned…
“#Quantum loop: US unveils blueprint for ‘virtually unhackable’ internet” Officials say quantum technology could become the basis for a more secure internet architecture US officials and scientists have begun laying the groundwork for a more secure “virtually unhackable” internet based on quantum computing technology. At a presentation Thursday, Department of Energy (DOE) officials issued a…
“#Quantum physicists crack mystery of ‘strange metals,’ a new state of matter” A diagram showing different states of matter as a function of temperature, T, and interaction strength, U (normalized to the amplitude, t, of electrons hopping between sites). Strange metals emerge in a regime separating a metallic spin glass and a Fermi liquid. Credit:…
“#Measuring how long quantum tunneling takes” Credit: Pixabay/CC0 Public Domain A team of researchers at the University of Toronto has found a way to measure how long quantum tunneling takes to happen. In their paper published in the journal Nature, the group describes experiments they conducted and the result they found when attempting to measure…
“#Scientists discover a topological magnet that exhibits exotic quantum effects” The arrows represent the electron spins pointing up from a kagome lattice. The chirality is represented by the counterclockwise circle of fire, which represents the propagating electrons/current on the edge of the magnet. The two cones demonstrate that the bulk of the magnet contains Dirac…