Archives: Events

Speaker: Tiago Debarba (Universidade Tecnológica Federal do Paraná/TU Wien) Abstract Quantum information provides a description of quantum mechanical systems based on informational assumptions, which leads to an informational characterization of the quantum world. However, it requires perfect control of microscopic systems, as described by the laws of quantum mechanics. This has proven to be one […]

Speaker: Nikolaos Kollas (University of Patras) Abstract We review the mathematics of exactly solvable Unruh-DeWitt detector models, interacting with massive scalar fields under instantaneous interactions, to construct a relativistic quantum Otto heat engine. By deriving the conditions under which the thermodynamic cycle is closed we present preliminary results on the dependence of the extracted work […]

Speaker: Josh Cudby (The University of Cambridge) Abstract Magic states were originally introduced as a resource that enables universal quantum computation using classically simulable Clifford gates. This concept has been extended to matchgate circuits (MGCs) which are made of two-qubit nearest-neighbour quantum gates defined by a set of algebraic constraints. In our work, we study […]

Speaker: Adán Cabello (Universidad de Sevilla) Abstract We will present some recent results. First, we show that some sets of quantum observables are unique up to an isometry and have a contextuality witness that attains the same value for any initial state. These two properties enable to certify them using the statistics of experiments with sequential […]

Speaker: Dariusz Chruściński, Sergey Denisov, Wojciech Tarnowski Abstract

Details Programme 15.30 – 15:55 Dariusz Chruściński “Roman S. Ingarden and his passion for physics” 16:00 – 16:55 2022 Ingarden Memorial Lecture                         Artur Ekert “Bell inequalities: From Curiosity to Security” 17:00 – 17:15 Coffee break 17:15-17:45 Distinguished talk (to be announced Nov. 29th, 2023) 17:45-18:15 Awarding of Junior KCIK Award for best Bachelor Thesis […]

Speaker: Stanisław Czachórski (UJ)  Abstract

Speaker: Albert Rico (UJ) Abstract Bell inequalities's journey from rags to riches of quantum theory was a long one. Proposed by John Bell in 1964, the inequalities were designed to check whether quantum theory, with its inherent statistical predictions, is a complete description of physical reality or whether it is just a provisional construct, with […]

Speaker: Armin Tavakoli (Lund University) Abstract Standard methods for witnessing entanglement and steering require that some parties are able to perfectly implement a set of quantum measurements. However, real quantum devices cannot be perfectly controlled. We propose an operational framework of imprecise measurements, tailored for devices which are trusted but not flawless. We investigate how […]

Speaker:  Michał Horodecki (ICTQT, UG) Abstract We treat the Cooper pairs in the superconducting electrodes of a Josephson junction (JJ) as an open system, coupled via Andreev scattering to external baths of electrons. The disequilibrium between the baths generates the direct-current bias applied to the JJ. In the weak-coupling limit we obtain a Markovian master […]