Quantum measurements with entangled atomic clouds A research team from the University of Basel and the Laboratoire Kastler Brossel (LKB) in Paris has shown that the entanglement of spatially separated quantum objects can also be used to measure sev- eral physical parameters simultaneously with in- creased 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 flows 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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