A primer on heat rectification

Speaker: Antonio Mandarino ICTQT Abstract The aim of this journal club talk will be the discussion of a topic that is getting more attention in the quantum thermodynamics community. In fact, numerous efforts, both theoretically and experimentally, are devoted to design technologies able to control and to route the heat flow in qubit systems suitable […]

Speaker: Kamil Korzekwa, Jagiellonian University (Kraków) Abstract It is of foremost importance, both from the foundational and technological point of view, to understand what components of the quantum theory are responsible for quantum supremacy, i.e. the potential ability of quantum computers to solve problems that cannot be solved efficiently on classical machines. One of the most […]

Speaker:  Roberto Baldijão, University of Campinas, IQOQI (Vienna) Abstract Contextuality is regarded as a non-classical feature, challenging our everyday intuition; quantum contextuality is currently seen as a resource for many applications in quantum computation, being responsible for quantum advantage over classical analogs. In our work, we adapt the N-cycle scenarios with odd N to multiple independent observers […]

Speaker: Erik Aurell,  KTH Royal Institute of Technology (Stockholm), Jagiellonian University (Kraków)  Abstract Most of the entropy in the current universe is believed to be in the form of Bekenstein-Hawking (BH) entropy of super-massive black holes. This entropy is proportional to the area of the horizon in units of Planck area, or, alternatively, proportional to […]

Speaker: Erik Aurell,  KTH Royal Institute of Technology (Stockholm), Jagiellonian University (Kraków) Abstract I will discuss two extensions of the standard theory of open quantum systems. The first concerns the heat current flowing through a system between two baths, quantified by its generating function. As shown previously the corresponding system functional has the form of […]

Speaker: Piotr Kolenderski, Single Photon Applications Laboratory   Abstract Quantum communication offers a selection of methods for absolutely secure exchange of information. There are two particular links which are used in practice: fibers and free space. The latter implemented using satellites is more challenging, but offers substantially longer ranges.During my talk I will present two projects running […]

Speaker: Robert Pisarczyk, University of Oxford   Abstract The capacity of a channel is known to be equivalent to the highest rate at which it can generate entanglement. Analogous to entanglement, the notion of a causality measure characterizes the temporal aspect of quantum correlations. Despite holding an equally fundamental role in physics, temporal quantum correlations have yet […]

Speaker: Tanmoy Biswas ICTQT Abstract Abstract of the paper: The information-carrying capacity of a memory is known to be a thermodynamic resource facilitating the conversion of heat to work. Szilard's engine explicates this connection through a toy example involving an energy-degenerate two-state memory. We devise a formalism to quantify the thermodynamic value of memory in general […]

Speaker: Fattah Sakuldee, ICTQT Abstract We study the classicality of a finite quantum system, called environment, defined by commutativity of the associate operator algebra, given sequential measurements on the environment. We demonstrate by constructing a scheme of probing from the pure-dephasing-type interaction with a qudit and preparation-evolution-measurement protocol thereon, the weak measurement sequence on the studied […]

Speaker: Stefano Cusumano, NEST, Scuola Normale Superiore and Istituto Nanoscienze-CNR (Pisa) Abstract As I will shortly move to ICTQT, in this talk I will try to give an overview of my work during the PhD. During this period I worked mainly on open quantum systems, applying collisional models to study both cascade systems (i.e. systems […]