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An electromagnetic analogue for a black hole laser – a system that could theoretically amplify Hawking radiation from the event horizon of a black hole and make it observable – has been proposed by Haruna Katayama of Hiroshima University in Japan. The idea follows on from demonstrations of analogues using Bose-Einstein condensates and has the potential to provide new insights into the relationship between quantum mechanics and gravity. If built, the device could even advance technologies such as quantum computing.

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