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Experimentalists at the Max Planck Institute of Quantum Optics in Garching (Germany), in close collaboration with theoretical physicist Eugene Demler at ETH Zurich, observed for the first time in microscopic detail how magnetic correlations mediate the pairing of quantum entities known as holes. The work establishes an intriguing platform for exploring theoretical models of high-temperature superconductivity — and might guide future efforts for designing novel quantum materials.

EPFL researchers have collaborated with colleagues at ETH Zurich and Harvard University on a new thin-film circuit which, when connected to a laser beam, produces finely tailorable terahertz-frequency waves. The device opens up a world of potential applications in optics and telecommunications.