Authors: George Rajna
The earliest known light in our universe, known as the cosmic microwave background, was emitted about 380,000 years after the Big Bang.  Technology originally developed for CERN's Large Hadron Collider and then flown in space by ESA is now being used to analyse historic artworks, helping to detect forgeries.  Entangled photons generated by a spaceborne quantum source could enable hack-proof key exchange for ultra high security applications.  These qubits are based on silicon carbide in which molybdenum impurities create color centers.  Scientists at Radboud University discovered a new mechanism for magnetic storage of information in the smallest unit of matter: a single atom.  One of these are single-atom magnets: storage devices consisting of individual atoms stuck ("adsorbed") on a surface, each atom able to store a single bit of data that can be written and read using quantum mechanics.  Physicists have experimentally demonstrated 18-qubit entanglement, which is the largest entangled state achieved so far with individual control of each qubit.  University of Adelaide-led research has moved the world one step closer to reliable, high-performance quantum computing.  A team of researchers with members from IBM Research-Zurich and RWTH Aachen University has announced the development of a new PCM (phase change memory) design that offers miniaturized memory cell volume down to three nanometers.  Monatomic glassy antimony might be used as a new type of single-element phase change memory.  Physicists have designed a 3-D quantum memory that addresses the tradeoff between achieving long storage times and fast readout times, while at the same time maintaining a compact form.  Quantum memories are devices that can store quantum information for a later time, which are usually implemented by storing and re-emitting photons with certain quantum states. 
Comments: 39 Pages.
[v1] 2019-05-09 12:36:53
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