From Paradoxes of Quantum Mechanics to Applications
Date, time: 9 April 2025, 1:00 p.m.
Speaker: Prof. UAM dr hab. Karol Bartkiewicz (Faculty of Physics and Astronomy AMU Poznan, Poland)
Abstract:
This lecture explores fundamental quantum mechanical paradoxes that challenge classical physics intuitions and enable modern quantum technologies. We will examine non-locality, contextuality, entanglement, and quantum steering through both theoretical frameworks and experimental demonstrations. The presentation will cover the EPR paradox [1] questioning quantum completeness, Bell's theorem [2] and its experimental verification [3,4], the GHZ paradox [5] as a direct contradiction to local realism, and the Kochen-Specker theorem [6] demonstrating quantum contextuality. We will introduce different measures of entanglement [7] and examine quantum steering [8] as an intermediate phenomenon introduced in response to the EPR paper. The lecture concludes with practical applications of these "paradoxical" quantum properties in quantum cryptography [9], teleportation [10], and quantum computing [11,12]. Finally, we will refer to some recent results obtained at AMU by the members of the Department of Quantum Information in this field.
Key references:
Chairman: prof. UAM dr hab. B. Graczykowski
https://mtpr.amu.edu.pl/event/speaker-prof-uam-dr-hab-karol-bartkiewicz/