The article discusses the 2009 CNRS Gold Medal awarded to Serge Haroche, a professor at the Collège de France, for his contributions to quantum physics, particularly in the field of cavity quantum electrodynamics. Haroche, who has been holding the chair of Quantum Physics since 2001, is known for his work on quantum information processing and his leadership in the Simple Systems Electrodynamics group at the Kastler Brossel Laboratory. The article also highlights Michael Wörrle, a guest professor who delivered lectures on Aizanoi, a city in Western Anatolia, focusing on its geography, history, and Roman influence. Wörrle, a scholar of ancient Greek institutions, has spent decades studying Greek city-states in Anatolia, including Pergamon, Ephesus, Milet, and Héraclée du Latmos. His research has earned him international recognition, and he has contributed to the development of the Munich Institute for Ancient History. The article also includes a map of Anatolia by Dominique Andrieu. The content is published in the "Lettre du Collège de France" journal, available online at https://journals.openedition.org/lettre-cdf/80, with a DOI of 10.4000/lettre-cdf.80. The print edition was published on June 1, 2009, with 12 pages and an ISSN of 1628-2329. The electronic version was published on June 24, 2010.The article discusses the 2009 CNRS Gold Medal awarded to Serge Haroche, a professor at the Collège de France, for his contributions to quantum physics, particularly in the field of cavity quantum electrodynamics. Haroche, who has been holding the chair of Quantum Physics since 2001, is known for his work on quantum information processing and his leadership in the Simple Systems Electrodynamics group at the Kastler Brossel Laboratory. The article also highlights Michael Wörrle, a guest professor who delivered lectures on Aizanoi, a city in Western Anatolia, focusing on its geography, history, and Roman influence. Wörrle, a scholar of ancient Greek institutions, has spent decades studying Greek city-states in Anatolia, including Pergamon, Ephesus, Milet, and Héraclée du Latmos. His research has earned him international recognition, and he has contributed to the development of the Munich Institute for Ancient History. The article also includes a map of Anatolia by Dominique Andrieu. The content is published in the "Lettre du Collège de France" journal, available online at https://journals.openedition.org/lettre-cdf/80, with a DOI of 10.4000/lettre-cdf.80. The print edition was published on June 1, 2009, with 12 pages and an ISSN of 1628-2329. The electronic version was published on June 24, 2010.