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{ "count": 1, "next": null, "previous": null, "results": [ { "id": 71998, "title": "QSE Quantum Seminar: \"Fibre-optical analogue of the event horizon: Hawking radiation and backreaction\"", "slug": "qse-quantum-seminar-fibre-optical-analogue-of-the", "event_url": "https://memento.epfl.ch/event/qse-quantum-seminar-fibre-optical-analogue-of-the", "visual_url": "https://memento.epfl.ch/image/33331/200x112.jpg", "visual_large_url": "https://memento.epfl.ch/image/33331/720x405.jpg", "visual_maxsize_url": "https://memento.epfl.ch/image/33331/max-size.jpg", "lang": "en", "start_date": "2026-07-02", "end_date": "2026-07-02", "start_time": "12:00:00", "end_time": "13:30:00", "description": "<p>Please join us<strong> </strong>for the<strong> QSE Center Quantum Seminar</strong> with<strong> Ulf Leonhardt</strong> from the <strong>Weizmann Institute of Science</strong> who will give a talk about <strong>\"Fibre-optical analogue of the event horizon: Hawking radiation and backreaction\"</strong> on Thursday July 2nd from 12:00 to 13:30.<br>\r\nLocation: <br>\r\n<br>\r\n<strong>Pizzas will be available</strong> at 12:00. All PhDs, postdocs, students, group leaders, and PIs are welcome to join us.<br>\r\n<br>\r\nTITLE:<strong> \"Fibre-optical analogue of the event horizon: Hawking radiation and backreaction\"</strong><br>\r\n<br>\r\nABSTRACT: <br>\r\nHawking radiation - the emission of quantum particles at the event horizon of a black hole - connects gravity with quantum mechanics and thermodynamics; the Bekenstein-Hawking entropy has been the benchmark for potential quantum theories of gravity. But Hawking radiation has never been observed in astronomy, only in laboratory analogues and the chances of ever observing it in space are astronomically small. The energy of Hawking radiation must come from the gravitational field around the black hole, but how field quanta generate Hawking quanta has been unknown. In this talk I report on experimental and theoretical evidence for the process that generates Hawking radiation in a fibre-optical analogue of the event horizon. There, as in gravity, it has been believed that Hawking radiation comes from a complicated, cascaded process, but we have found a simple, direct process and measured its backreaction on the field. Our findings suggest an equally direct process for other laboratory analogues and perhaps also for gravitational fields, shedding light on how black holes might radiate. <br>\r\n<br>\r\nBIO: <br>\r\n<strong>Ulf Leonhardt</strong> joined the Weizmann Institute of Science as Professor of Physics in November 2012 after an international career. Ulf Leonhardt was born in Schlema, in former East Germany, on October 9th 1965. He studied physics at Friedrich-Schiller University Jena, at Moscow State University and at Humboldt University Berlin where he received his PhD in 1993. He was a Visiting Scholar at the Oregon Center for Optics in the US, a Habilitation Fellow at the University of Ulm in Germany and a Göran-Gustafson and Feodor-Lynen fellow at the Royal Institute of Technology in Stockholm, Sweden. From 2000 to 2012, he was the Chair in Theoretical Physics at the University of St Andrews, UK. Ulf Leonhardt also had various visiting positions: in 2008 he was a visiting professor at the National University of Singapore and in 2011 at the University of Vienna; in 2012/13 he was an adjunct professor at South China Normal University, fsince 2026 he is a Global Fellow and visiting professor at Vienna Institute of Technology. <br>\r\n <br>\r\n<strong>Ulf Leonhardt</strong> is the first from former East Germany to receive the Otto Hahn Award of the Max Planck Society. For his PhD thesis he received the Tiburtius Prize of the Senate of Berlin. In 2006 Scientific American listed him among the top 50 policy, business and research leaders of the world of that year. In 2008 he received a Royal Society Wolfson Research Merit Award and in 2009 a Theo Murphy Blue Skies Award of the Royal Society. In 2012 he received a thousand-talent award of China. He is a Fellow of the Institute of Physics and of the Royal Society of Edinburgh.</p>", "image_description": "", "creation_date": "2026-06-01T15:43:11", "last_modification_date": "2026-06-03T18:16:35", "link_label": "", "link_url": "", "canceled": "False", "cancel_reason": "", "place_and_room": "BS 260", "url_place_and_room": "https://plan.epfl.ch/?room==BS%20260", "url_online_room": "", "spoken_languages": [ "https://memento.epfl.ch/api/v1/spoken_languages/2/?format=api" ], "speaker": "<strong>Ulf Leonhardt</strong>", "organizer": "QSE Center", "contact": "[email protected]", "is_internal": "False", "theme": "", "vulgarization": { "id": 1, "fr_label": "Tout public", "en_label": "General public" }, "registration": { "id": 3, "fr_label": "Entrée libre", "en_label": "Free" }, "keywords": "QSE Quantum Seminar", "file": null, "icalendar_url": "https://memento.epfl.ch/event/export/120930/", "category": { "id": 1, "code": "CONF", "fr_label": "Conférences - Séminaires", "en_label": "Conferences - Seminars", "activated": true }, "academic_calendar_category": null, "domains": [], "mementos": [ "https://memento.epfl.ch/api/v1/mementos/1/?format=api", "https://memento.epfl.ch/api/v1/mementos/5/?format=api", "https://memento.epfl.ch/api/v1/mementos/6/?format=api", "https://memento.epfl.ch/api/v1/mementos/8/?format=api", "https://memento.epfl.ch/api/v1/mementos/27/?format=api", "https://memento.epfl.ch/api/v1/mementos/145/?format=api", "https://memento.epfl.ch/api/v1/mementos/191/?format=api", "https://memento.epfl.ch/api/v1/mementos/296/?format=api", "https://memento.epfl.ch/api/v1/mementos/389/?format=api" ] } ] }
