Unser nächstes Physikalisches Kolloquium findet am Montag, den 19. Januar 2026, 12 Uhr c.t. statt. Dr. Mikhail Fistoul stellt den Physik-Nobelpreis des Jahres 2025 vor: „The Nobel Prize in Physics 2025: How a 40-Year-Old Discovery Led Us to a New Era of Quantum Information“.
The 2025 Nobel Prize in Physics was awarded to three great scientists, John Clarke, Michel Devoret and John M. Martinis “for the discovery of macroscopic quantum mechanical tunnelling and energy quantisation in an electric circuit“. What is the macroscopic quantum tunnelling (MQT)? What is the difference between the quantum tunnelling phenomenon well known for many years in the microworld of atoms/molecules, MQT and macroscopic quantum coherence? Can we increase the size of systems whose behavior is governed by quantum mechanical laws, even further? How does the «classical» world try to “kill” the macroscopic quantum mechanical behavior, and how can smart scientists avoid it?
In this talk I will provide the answers to these and other questions and explain how the field of macroscopic quantum phenomena has come a long 40-years way from unique laboratories to mature and diverse applications in the field of quantum information, e.g., quantum computing, quantum simulations and quantum technology. In particular, I will present both the most important discoveries preceding the discovery of the Nobel laureates, i.e., the phenomenon of superconductivity, tunnelling in semiconductors/ superconductors, the Josephson effect, and subsequent discoveries in the field of coherent macroscopic quantum-mechanical phenomena with superconducting devices such as Rabi oscillations and Ramsey fringes of superconducting qubits, the gate control of qubits, networks of interacting qubits.
Abstract des Vortrags von Dr. Mikhail V. Fistul
Prof. Dr. Ilya Eremin gibt eine Einführung in den Vortrag.
Die Fakultät lädt alle Interessierten herzlich ein. Die Veranstaltung findet im Hörsaal HZO 20 statt.
Foto: © Johan Jarnestad/The Royal Swedish Academy of Sciences