The theoretical approach of determining the magnetic properties of Single Ion Magnets

Speaker: Marek Eggen (University of Gdansk) Abstract In my presentation about my PhD work I will talk about Single Ion Magnets and their possible applications as the new contrast agents used in MRI. In order to obtain the magnetic properties of the selected Single Ion Magnets I have used ab-initio methods which are going to be […]

Speaker: Ana Belen Sainz (ICTQT, University of Gdansk) Abstract This talk is a brief summary of my Habilitation thesis, tailored at the members of the Rada Dyscypliny, and hopefully interesting for other quantum scientists as well. I will walk you through 12 of my main publications from the last six years, touching on almost-quantum correlations, causal […]

Speaker: Karolina Lademann (University of Gdansk) Abstract In this presentation I will focus on some numerical approaches to certain types of linear Klein Gordon equations. More particularly, I will present the numerical approach based on the Duhamel formula, where we obtain second order approximation. Modulated Fourier expansion based method will be presented as the one useful […]

Speaker: Marcin Markiewicz (ICTQT, University of Gdansk) Abstract ``The unambiguous account of proper quantum phenomena must, in principle, include a description of all relevant features of experimental arrangement" (Bohr). The measurement process is composed of pre-measurement (quantum correlation of the system with the pointer variable), and an irreversible decoherence via interaction with an environment. The system […]

Speaker: Karol Horodecki (ICTQT, University of Gdansk) Abstract Quantum key distribution (QKD) is a method that distributes a secret key to a sender and receiver by the transmission of quantum particles (e.g. photons). Device-independent quantum key distribution (DIQKD) is a version of QKD with a stronger notion of security, in that the sender and receiver base […]

Speaker: Andy Chia (NUS Singapore) Abstract Abstract: The amplification of light in quantum theory has a long history, with research devoted mostly to the linear (i.e. one-photon) regime due to its simplicity [1]. However, nonlinear amplification has also received some interest since the 1960s. One obvious generalisation of linear/one-photon amplification is to allow for two […]

Speaker: Hippolyte Lazourenko-Dourdent  (Institut Néel / Université Grenoble Alpes) Abstract While the standard formulation of quantum theory relies on a fixed background causal structure, one can consider a more general framework - based on quantum theory - where the causal structure is indefinite (the "process matrix formalism"). Interestingly, the tools introduced to identify causal indefiniteness - causal […]

Speaker: Maharshi Ray (Centre for Quantum Technologies, National University of Singapore) Abstract We discuss schemes to certify local quantum systems via self-testing and dimension witnessing. This work leverages the graph-theoretic framework for contextuality introduced by Cabello, Severini, and Winter, combined with tools from combinatorial optimisation that guarantee the unicity of optimal solutions. We first show […]

Speaker: Marek Czachor (Gdańsk University of Technology) Abstract Bell's theorem is supposed to exclude all local hidden-variable models of quantum correlations. However, an explicit counterexample shows that a new class of local realistic models, based on generalized arithmetic and calculus, can exactly reconstruct rotationally symmetric quantum probabilities typical of two-electron singlet states. Observable probabilities are […]

Speaker: Roberto D. Baldijão (State University of Campinas, IQOQI Vienna) Abstract Quantum Darwinism posits that the emergence of a classical reality relies on the spreading of classical information from a quantum system to many parts of its environment. But what are the essential physical principles of quantum theory that make this mechanism possible? We address this […]