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22 Fast optical pulses create a plasma of electrons and holes in a semiconductor in which excitons (pairs of holes and electrons) and combinations of two excitons emerge; now a stable liquid-like droplet of electrons and holes has been detected and called a ‘dropleton’. http://www.nature.com/nature/journal/v506/n7489/full/nature12994.html
17 Schrodinger’s cat paradox embodies the open question of whether quantum effects can survive at macroscopic scales. A quantum optics experiment explores this question by creating entanglement between a microscopic and a macroscopic system. http://www.nature.com/nphys/journal/v9/n9/abs/nphys2682.html
16 A magnetic field can lift the spin degeneracy of electrons. This Zeeman effect is an important route to generating the spin polarization required for spintronics. It is now shown that such polarization can also be achieved without the need for magnetism. The unique crystal symmetry of tungsten selenide creates a Zeeman-like effect when a monolayer of the material is exposed to an external electric field. http://www.nature.com/nphys/journal/v9/n9/abs/nphys2691.html
6 Fast, single-photon detection enables the observation of entanglement between a stationary quantum bit (a single quantum dot spin) and a propagating quantum bit (a single photon), marking a first step towards the implementation of a quantum network with nodes consisting of semiconductor spin quantum bits.
http://www.nature.com/nature/journal/v491/n7424/full/nature11573.html