Semi-device-independent information processing with spatiotemporal degrees of freedom

Speaker: Marius Krumm (IQOQI Vienna and University of Vienna Abstract Nonlocality, as demonstrated by the violation of Bell inequalities, enables device-independent cryptographic tasks that do not require users to trust their apparatus. In this presentation, we consider devices whose inputs are spatiotemporal degrees of freedom, e.g. orientations or time durations. Without assuming the validity of […]

Speaker: Otavio A. D. Molitor, ICTQT Abstract With the study of ever decreasing systems, it's paramount to understand thermodynamic phenomena in ultra-small scales, where quantum phenomena live. This gave origin to the flourishing research field known as quantum thermodynamics. One of its main branches, which deals with quantum systems undergoing thermodynamic cycles, is called quantum […]

Speaker: Labeled graph framework for unique games Abstract We present a framework in which unique games are represented in the form of edge-labelings of graphs. We define an equivalence relation which preserves both classical and quantum values of games. We also show how the classical value of the game depends on the properties of the […]

Speaker: Marco Erba, Università degli Studi di Pavia, INFN   Abstract A standardly adopted notion of classicality is the following: a system is deemed classical if its set of states is a simplex. Also, it is traditionally excluded that a classical theory may admit of entangled states. This is of course the case for classical theory (CT). […]

Speaker: prof. Marek Żukowski, Director of ICTQT Abstract Because of the approaching deadline of 15/12/2020 for many NCN grant applications, the Director, himself a member of NCN and a co-author in many of its projects, will share his expertise in writing them.

Speaker: prof. Marek Żukowski, Director of ICTQT Abstract Because of the approaching deadline of 15/12/2020 for many NCN grant applications, the Director, himself a member of NCN and a co-author in many of its projects, will share his expertise in writing them.

Speaker: Anubhav Chaturvedi, ICTQT Abstract What makes quantum theory stand out against general stochastic classical theories? Such a question necessitates a precise evaluation of the assumptions that go into the definition of classicality. To be of foundational, as well as technological significance, these assumptions must be operationally falsifiable. In this seminar, we shall derive operational properties, […]

Speaker: Alejandro Jenkins, ICTQT Abstract We describe the dynamics of a quantum field coupled to a moving heat bath, in the formalism of the Markovian master equation for the field considered as an open system. We apply this to the superradiance of a rotating black hole, which provides a useful paradigm for understanding other irreversible active […]

Speaker: Manik Banik, Indian Institute of Science Education and Research (Thiruvananthapuram) Abstract Status of quantum wavefunction is one of the most debated issues in quantum foundations -- whether it corresponds directly to the reality or just represents knowledge or information about some aspect of reality. In this work we propose a ψ-ontology theorem addressing this […]

Speaker: Giovanni Scala, University of Bari Abstract Wave-particle duality is considered to be one of the true misteries of quantum theory. However its core phenomenology can be reproduced by a local and noncontextual ontological model for particularly designed interferometric setup. Open is the question whether there is a connection between wave-particlle duality and contextuality in general scenarios. […]