Pure quantum-mechanical mixture of electrons and photons demonstrated in bismuth selenide

Tuesday, January 5, 2016 - 06:35 in Physics & Chemistry

In 2013, MIT physicists showed for the first time that shining powerful mid-infrared laser light on solid bismuth selenide produces Floquet-Bloch states, which are characterized by replicas of electronic energy states inside a solid with gaps opening up at crossing points of replica states. The same external light also interacts with free electron states immediately outside the solid producing a competing state, called the Volkov state, which is gapless.

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