{"data":{"id":1720,"lang":"en","title":"Finnish Physicists Detect 0.83 Zeptojoules, the Smallest Energy Pulse Ever Measured, Edging Toward Single-Photon and Dark-Matter Sensing","summary":"Aalto University physicists measured a 0.83-zeptojoule pulse, the most sensitive calorimetric detection ever, with uses in quantum computing, photon counting and dark-matter searches.","category":"science","category_label":"Science","published_at":"2026-05-27T02:01:30Z","updated_at":"2026-05-27T02:01:30Z","url":"https://techtools.cz/tools/news/article/1720-finnish-physicists-detect-0-83-zeptojoules-the-smallest-energy-pulse-ever","api_url":"https://techtools.cz/news-api/v1/articles/1720?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/1720.md?lang=en","image_url":"https://www.sciencedaily.com/images/1920/zeptojoule-calorimetry.webp","word_count":148,"reading_time_minutes":1,"sources":[{"url":"https://www.sciencedaily.com/releases/2026/05/260520093654.htm","domain":"sciencedaily.com"},{"url":"https://physicsworld.com/a/new-bolometer-achieves-sub-zeptojoule-resolution/","domain":"physicsworld.com"},{"url":"https://www.nature.com/articles/s41928-026-01615-2","domain":"nature.com"}],"translation":{"lang":"cs","id":1793,"title":"Finstí fyzici detekovali 0,83 zeptojoulu, nejmenší energetický puls, jaký kdy byl změřen, blíží se snímání jednotlivých fotonů a temné hmoty","url":"https://techtools.cz/tools/news/clanek/1793-finsti-fyzici-detekovali-0-83-zeptojoulu-nejmensi-energeticky-puls-jaky-kdy-byl","api_url":"https://techtools.cz/news-api/v1/articles/1793?lang=cs"},"content":"Researchers in Finland have measured the faintest burst of energy ever recorded by a calorimeter: a single electromagnetic pulse carrying just 0.83 zeptojoules, less than a trillionth of a billionth of a joule. The team, led by Academy Professor Mikko Mottonen at Aalto University with quantum-computing firm IQM and the VTT Technical Research Centre of Finland, reported the result in Nature Electronics.\n\nThe device is a bolometer built from a junction of superconducting and normal metal. Superconductivity is so fragile that even a minuscule rise in temperature flips the material to a measurable state, letting the sensor register energy levels that previously slipped below the noise floor.\n\nBecause the calorimeter runs at the same millikelvin temperatures as quantum-computer qubits, the researchers say it could read out qubits with less disturbance, count individual photons, and one day help hunt for elusive dark-matter axions arriving from space at unpredictable times."}}