All quantum spectra in one shot

Speaker: Carlos L. Benavides-Riveros (MPI for the Physics of Complex Systems, Dresden / University of Trento) Abstract Determining the properties of the excitations in quantum many-body systems is a fundamental problem across almost all sciences. For instance, quantum excited states underpin new states of matter, support biological processes such as vision, or determine optoelectronic properties […]

Speaker: Ekta Panwar (UG/ICTQT) Abstract The predictions of quantum theory are incompatible with local-causal explanations. This phenomenon is called Bell non-locality and is witnessed by the violation of Bell-inequalities. The maximal violation of certain Bell-inequalities can only be attained in an essentially unique manner. This feature is referred to as self-testing and constitutes the most […]

Speaker: Adam Miranowicz, Adam Mickiewicz University (Poznań) and RIKEN (Wako) Abstract Experimental demonstrations and control of strong coupling of light and matter has lead to various applications for lasers, quantum sensing, and quantum information processing since 1980s. In my talk, I will review [1] recent theoretical and experimental progress in the ultrastrong coupling (USC) and deep-strong coupling (DSC) regimes of […]

Speaker: Dardo Goyeneche (Universidad de Antofagasta, Chile) Abstract The quantum marginal problem consists in deciding whether a given set of marginal reductions is compatible with the existence of a global quantum state or not. In this talk, we formulate the problem from the perspective of dynamical systems theory and study its advantages with respect to the […]

Speaker: Christoph Dittel (University of Freiburg) Abstract Indistinguishability is the essential ingredient for many-body interference — a purely quantum mechanical interference effect between many identical bosonic or fermionic particles that can be exploited for a variety of applications, ranging from simulations with ultracold atoms to photonic quantum information processing. In this talk I give an […]

Speaker: Srijon Ghosh Abstract The quest for small quantum thermal machines that can supersede their classical counterparts in performance has been an important and vibrant component in the field of quantum thermodynamics. These machines are expected to not only provide a better understanding of the interplay between the concepts from quantum information theory and thermodynamics, […]

Speaker: Lorenzo Catani (TU Berlin) Abstract Uncertainty relations express limits on the extent to which the outcomes of distinct measurements on a single state can be made jointly predictable. The existence of nontrivial uncertainty relations in quantum theory is generally considered to be a way in which it entails a departure from the classical worldview. […]

Speaker: Nicolás Gigena (University of Warsaw) Abstract In this work, we study a three-parameter family of Bell functionals in a bipartite scenario with 3 measurement settings per party and 2 outcomes per measurement. The members of this family can be thought of as variations of the well-known I3322 functional, the only one in this scenario […]

Speaker: Sagnik Chakraborty (Nicolaus Copernicus University, Torun) Abstract We discuss a model of a unitary evolution of two-qubits where the joint Hamiltonian is so chosen that one of the qubits acts as a bath and thermalizes the other qubit which is acting as the system. The corresponding master equation for the system, for a specific […]

Speaker: Robert H. Jonsson (Wallenberg Initiative on Networks and Quantum Information, Nordita (Stockholm) Abstract Gaussian quantum states play a central role in many branches of physics - from quantum optics, to condensed matter and quantum field theory. In this talk, I aim to showcase the strength of the Kähler structure formalism for Gaussian states by […]