Quantum Field Theory 1 - Lecture 8A
Volodya Miransky - Western University
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The Open Universe: Toward a Post-Reductionist Science
Stuart Kauffman - Santa Fe Institute
M2-branes and AdS/CFT Correspondence
Igor Klebanov - Princeton University
Culs-de-sac and open ends
David Gross - Universität zu Köln
Unitary design: bounds on their size
Andrew Scott - Griffith University
Quantum state tomography from yes/no measurements
Martin Roetteler - NEC Laboratories America (Princeton)
Seeking Symmetries of SIC-POVMs
Markus Grassl - Max Planck Institute for the Science of Light
SIC Triple Products
Marcus Appleby - Queen Mary University of London
Why I care
Chris Fuchs - University of Massachusetts Boston
IR modification of gravity and the forbidden mass range of graviton in de Sitter Space
Yanwen Shang - Citigroup Incorporated
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 3
Tibra Ali - Perimeter Institute for Theoretical Physics
Lie algebras from Lie groups. The adjoint representation. Examples of Lie groups: GL(n,K), SO(n).
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 2
Tibra Ali - Perimeter Institute for Theoretical Physics
Fundamental concepts of represenation theory. Groups and quantum mechanics. Lie groups.
PSI 2018/2019 - Lie Groups and Lie Algebras - Lecture 1
Tibra Ali - Perimeter Institute for Theoretical Physics
Motivation and fundamental concepts of group theory. Examples of groups.
Convex Programming and Machine Learning in Quantum Information: Complementary Methods for Discovery and Verification
Convex optimization, linear and semidefinite programming in particular, has been a standard tool in quantum information theory, giving certificates of local and quantum correlations, contextuality, and more. Increasingly, similar methods are making headways in quantum many-body physics, giving lower…
Expressiveness in Deep Learning via Tensor Networks and Quantum Entanglement - Nadev Cohen
Three fundamental factors determine the quality of a statistical learning algorithm: expressiveness, generalization and optimization. The classic strategy for handling these factors is relatively well understood. In contrast, the radically different approach of deep learning, which in the last few…
Learning the quantum algorithm for state overlap
Lukasz Cincio - Los Alamos National Laboratory
Short-depth algorithms are crucial for reducing computational error on near-term quantum computers, for which decoherence and gate infidelity remain important issues. Here we present a machine-learning inspired approach for discovering such algorithms. We apply our method to a ubiquitous primitive…
Observers as Primitives
Nuriya Nurgalieva - ETH Zurich
Let us suppose that we are trying to build a physical theory of the universe, in order to do so, we have to introduce some primitive notions, on which the theory will be based upon. We explore possible candidates that can be considered to be such "primitives": for example, the structure of the…
Counterfactual communication protocols
Lev Vaidman - Tel Aviv University
Possibility to communicate between spatially separated regions, without even a single photon passing between the two parties, is an amazing quantum phenomenon. The possibility of transmitting one value of a bit in such a way, the interaction-free measurement, was known for quarter of a century. The…
Time-delocalized quantum subsystems and operations: on the existence of processes with indefinite causal structure in quantum mechanics
Ognyan Oreshkov - Université Libre de Bruxelles
It was recently found that it is theoretically possible for there to exist higher-order quantum processes in which the operations performed by separate parties cannot be ascribed a definite causal order. Some of these processes are believed to have a physical realization in standard quantum…
Relativistic temperature gradients
Jessica Santiago - Victoria University of Wellington
Despite being broadly accepted nowadays, temperature gradients in thermal equilibrium states continue to cause confusion, since they naively seem to contradict the laws of classical thermodynamics. In this talk, we will explore the physical meaning behind this concept, specifically discussing the…
Models and Tests of Quantum Theory and Gravity
Adrian Kent - University of Cambridge
Models that have some but not all features of standard quantum theory can be valuable in several ways, as Bell, Ghirardi-Rimini-Weber-Pearle, Hardy, Spekkens and many others have shown. One is to illuminate quantum theory and shed light on possible reaxiomatisations or reformulations. Another is to…
From quantum to cognition in pictures.
Bob Coecke - Quantinuum
For well over a decade, we developed an entirely pictorial (and formally rigorous!) presentation of quantum theory [*]. At the present, experiments are being setup aimed at establishing the age at which children could effectively learn quantum theory in this manner. Meanwhile, the pictorial language…