Right-Handed Photons…

Topics: Modern Physics, Particle Physics, Quantum Mechanics, Quarks Note: A primer on quarks at Hyperphysics On 17 January 1957, a few months after Chien-Shiung Wu’s discovery of parity violation, Wolfgang Pauli wrote to Victor Weisskopf: “Ich glaube aber nicht, daß der Herrgott ein schwacher Linkshänder ist” (I cannot believe that God is a weak left-hander).Continue reading “Right-Handed Photons…”

Quantum Modem…

Topics: Modern Physics, Nanotechnology, Quantum Computer, Quantum Mechanics (Nanowerk News) The first quantum revolution brought about semiconductor electronics, the laser and finally the internet. The coming, second quantum revolution promises spy-proof communication, extremely precise quantum sensors and quantum computers for previously unsolvable computing tasks. But this revolution is still in its infancy. A central researchContinue reading “Quantum Modem…”

Chirality…

Topics: Modern Physics, Particle Physics, Quantum Mechanics Our right and left hands are reflections of one another, but they are not equal. To hide one hand perfectly behind the other, we must face our palms in opposite directions. In physics, the concept of handedness (or chirality) works similarly: It is a property of objects thatContinue reading “Chirality…”

Untangling Entanglement…

Topics: Entanglement, Quantum Mechanics, Quantum Optics Natalia Herrera-Valencia and colleagues have successfully unscrambled entangled light after it has passed through a 2 m long multimode fibre. Led by Mehul Malik, the team at the Heriot-Watt University in Edinburgh tackled the challenge using entanglement itself. The research was done in collaboration with a colleague at theContinue reading “Untangling Entanglement…”

City-Sized, Secure Quantum Network…

Topics: Cryptography, Futurism, Internet of Things, Modern Physics, Quantum Computer, Quantum Mechanics Quantum cryptography promises a future in which computers communicate with one another over ultrasecure links using the razzle-dazzle of quantum physics. But scaling up the breakthroughs in research labs to networks with a large number of nodes has proved difficult. Now an international teamContinue reading “City-Sized, Secure Quantum Network…”

Graphene Currents…

Topics: Materials Science, Nanotechnology, Quantum Mechanics, Semiconductor Technology A team led by researchers from Harvard University and the University of Maryland in the US has used defects in diamond to map the magnetic field generated by electrical currents in graphene. Their experiments reveal that currents in this atomically-thin form of carbon flow like a viscousContinue reading “Graphene Currents…”

Strange Metals…

Topics: Black Holes, Modern Physics, Quantum Mechanics, Superconductors, Theoretical Physics Even by the standards of quantum physicists, strange metals are just plain odd. The materials are related to high-temperature superconductors and have surprising connections to the properties of black holes. Electrons in strange metals dissipate energy as fast as they’re allowed to under the lawsContinue reading “Strange Metals…”