Bilocal classical theory: the independence of entanglement and complementarity

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. […]

Speaker: Victoria Wright, ICTQT Abstract General probabilistic theories are shown to admit a Gleason-type theorem if and only if they satisfy the no-restriction hypothesis, or a "noisy" version of the hypothesis. Therefore, in precisely these theories we recover the state space by assuming that (i) states consistently assign probabilities to measurement outcomes and (ii) there […]

Speaker: Marcin Łobejko, UG / ICTQT Abstract The minimal-coupling quantum heat engine is a thermal machine consisting of an explicit energy storage system, heat baths, and a working body, which couples alternatively to subsystems through discrete steps - energy conserving two-body quantum operations. Within this paradigm, it is presented a general framework of quantum thermodynamics, […]

Speaker: Gláucia Murta, Heinrich-Heine-Universitat Dusseldorf Abstract Going beyond the simple two-party scenario of quantum key distribution, we consider N parties who wish to certify security against a potential eavesdropper in a cryptographic task. Moreover, we consider the very adversarial scenario in which the parties make no assumption about the underlying quantum system or the internal […]