Quantum measurements with entangled atomic clouds A research team of the University of Basel and the Laboratoire Kastler Brossel (LKB) in Paris has shown that the entanglement of spatially separated quan- tum objects can also be used to measure several physical parameters simultaneously with increased precision. Media release University of Basel Original publication Light changes a magnet’s polarity Researchers at the University of Basel and the ETH in Zurich have succeeded in changing the polarity of a special ferromagnet using a laser beam. In the future, this method could be used to create adaptable electronic circuits with light. Media release University of Basel Original publication The researchers used a laser pulse (blue) to change the polarity of a ferroma- gnetic state in a special material consisting of twisted atomic layers (red). (Illustration: Enrique Sahagún, Scixel / University of Basel, Department of Physics) With three atomic clouds whose spins (blue) are entangled with each other at a distance, the researchers can measure the spatial variation of an electro- magnetic field. (Illustration: Enrique Sahagún, Scixel / University of Basel, Department of Physics) Energy flow in semiconductors: New insights thanks to ultrafast spectroscopy For the first time and with unprecedented accuracy, a team of researchers from the University of Basel has observed unique energy flow mechanisms in a semi- conductor material following excitation by extremely short laser pulses. Gaining a better understanding of these energy flow is vital for improving the efficiency of electronic devices and computer chips. SNI post with video Original publication In a short video, Grazia Raciti and Begoña Abad Mayor explain how they are able to observe the flow of energy in a semiconductor material with unprece- dented detail. 42 SNI INSight June 2026
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