Massive photons in an artificial magnetic field

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An international research collaboration that combined academics from Poland, the UK and Russia has created a two-dimensional system – a thin optical cavity filled with liquid crystal – in which they trapped photons with unique properties.┬áThe localized photons behaved like massive particles. It was found that as the properties of the cavity were modified by an external voltage, the photons behaved like quasiparticles endowed with a magnetic moment, called “spin”, under the influence of an artificial magnetic field. The research has been published in Science, to read it follow the link.