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Light-induced increase of transition temperature in superconductors

Recently, physicists at Universität Hamburg demonstrated in a theoretical work that superfluidity emerges, when the atoms of a cold quantum gas are shaken by shining light on them. Now the scientists, who are also members of CUI, could experimentally proof  the predictions. Their findings clearify a controversal debate on experimental observations of a light-induced increase in the transition temperature of electronic superconductors.

Read more in German.

Atoms are transformed by a modulated beam into a superfluid. (Credit: UHH/MIN/Mathey group)

Atoms placed between two highly reflecting mirrors. (Credit: UHH/MIN/Hemmerich group)


“Dynamical control of order in a cavity-BEC system”
J. G. Cosme, C. Georges, A. Hemmerich, and L. Mathey
Physical Review Letters 121, 153001 (2018).
DOI: 10.1103/PhysRevLett.121.153001

“Light-induced coherence in an atom-cavity system”
C. Georges, J. G. Cosme, L. Mathey, A. Hemmerich
Physical Review Letters 121, 220405 (2018).
DOI: 10.1103/PhysRevLett.121.220405