Quantum mechanics redefines information and its fundamental properties. Researchers at Perimeter Institute work to understand the properties of quantum information and study which information processing tasks are feasible, and which are infeasible or impossible. This includes research in quantum cryptography, which studies the tradeoff between information extraction and disturbance, and its applications. It also includes research in quantum error correction, which involves the study of methods for protecting information against decoherence. Another important side of the field is studying the application of quantum information techniques and insights to other areas of physics, including quantum foundations and condensed matter.
Format results

17 talksCollection Number C18020
Talk


Counterfactual communication protocols
Lev Vaidman Tel Aviv University


Models and Tests of Quantum Theory and Gravity
Adrian Kent University of Cambridge

From quantum to cognition in pictures.
Bob Coecke University of Oxford


Measures of Preparation Contextuality
Matthew Leifer Chapman University

Observables and (no) time in quantum gravity
Bianca Dittrich Perimeter Institute for Theoretical Physics


Talk

From 3D TQFTs to 4D models with defects
Bianca Dittrich Perimeter Institute for Theoretical Physics

Hopf algebras and parafermionic lattice models
Joost Slingerland National University of Ireland

Frobenius algebras, Hopf algebras and 3categories
David Reutter Universität Hamburg


The Kitaev model and aspects of semisimple Hopf algebras via the graphical calculus
Tobias Fritz Perimeter Institute for Theoretical Physics


Interacting Hopf monoids and Graphical Linear Algebra
Pawel Sobocinski University of Southampton

Introduction to CQM
Ross Duncan University of Oxford


Contextuality: Conceptual Issues, Operational Signatures, and Applications
23 talksCollection Number C17027Talk

How to go from the KS theorem to experimentally testable noncontextuality inequalities
Ravi Kunjwal Funds for Scientific Research  FNRS


Contextuality and Temporal Correlations in Quantum Mechanics
Otfried Guhne University of Siegen


Contextuality as a resource for quantum computation: the trouble with qubits
Juan BermejoVega Freie Universität Berlin

Contextuality and noncontextuality in (qudit) quantum computation
Dan Browne University College London (UCL)  Department of Physics & Astronomy


Contextuality and quantum simulation
Stephen Bartlett University of Sydney


It from Qubit Summer School
62 talksCollection Number C16003Talk

Toy Holography
Daniel Harlow Massachusetts Institute of Technology (MIT)

Quantum Gravity and Quantum Chaos
Stephen Shenker Stanford University

Why physicists should care about the complexity zoo
Adam Buland Massachusetts Institute of Technology

Eigenstate Thermalization Hypothesis
Markus Müller Institute for Quantum Optics and Quantum Information (IQOQI)  Vienna

Modular hamiltonians in 2d CFT
John Cardy University of California

Tensor Network Holography

Vijay Balasubramanian University of Pennsylvania

Xiaoliang Qi Stanford University

Brian Swingle University of Maryland  College Park


Black Hole Information Paradox  2
Daniel Harlow Massachusetts Institute of Technology (MIT)

Quantum NP and the Complexity of Ground States
Dorit Aharonov Hebrew University of Jerusalem


Quantum Information in Quantum Gravity II
30 talksCollection Number C15041Talk

The Complexity and (Un)Computability of Quantum Phase Transitions
James Watson University of Maryland

Introduction to Quantinuum and TKET
Mark Jackson University of Leiden

Quantum simulation of Z2 lattice gauge theory with dynamical matter
Fabian Grusdt LudwigMaximiliansUniversitiät München (LMU)

NLTS Hamiltonians from good quantum codes
Anurag Anshu Harvard University

Positivity, negativity, entanglement, and holography
Mukund Rangamani Durham University  Department of Mathematical Sciences

3D Holography: from discretum to continuum
Bianca Dittrich Perimeter Institute for Theoretical Physics

Quantum Fisher metric in field theory and gravity
Nima Lashkari McGill University

Wormholes and Complexity
Adam Brown Stanford University


Foundations of Quantum Mechanics
17 talksCollection Number C18020The foundations of quantum mechanics have been revitalized in the past few decades by three developments: (i) the influence of quantum computation and quantum information theory (ii) studies of the interplay between quantum theory and relativity particularly the analysis of indefinite causal structure and (iii) proposals to reconstruct quantum theory from basic axioms. There have also been very interesting developments in understanding and classifying no=locality and contextuality using tools from sheaf theory and cohomology as well as operator algebras and category theory. The International Congress of Mathematical Physics is a natural forum for the discussion of these topics. In the past there have been satellite workshops on topics like Operator algebras and quantum statistical mechanics which also address fundamental issues. The modern study of quantum foundations is very much influenced and informed by mathematics: sheaf theory and cohomology category theory information theory convex analysis in addition to the continuing interest in operator algebras and functional analysis. The aim of the workshop is to bring together researchers who have made substantial contribution to the recent developments. The workshop will be held at Perimeter Institute over a five day period from July 30

Hopf Algebras in Kitaev's Quantum Double Models: Mathematical Connections from Gauge Theory to Topological Quantum Computing and Categorical Quantum Mechanics
18 talksCollection Number C17029The Kitaev quantum double models are a family of topologically ordered spin models originally proposed to exploit the novel condensed matter phenomenology of topological phases for faulttolerant quantum computation. Their physics is inherited from topological quantum field theories, while their underlying mathematical structure is based on a class of Hopf algebras. This structure is also seen across diverse fields of physics, and so allows connections to be made between the Kitaev models and topics as varied as quantum gauge theory and modified strong complementarity. This workshop will explore this shared mathematical structure and in so doing develop the connections between the fields of mathematical physics, quantum gravity, quantum information, condensed matter and quantum foundations.

Contextuality: Conceptual Issues, Operational Signatures, and Applications
23 talksCollection Number C170272017 marks 50 years since the seminal 1967 article of Kochen and Specker proving that quantum theory fails to admit of a noncontextual model. Despite the fact that the KochenSpecker theorem is one of the seminal results concerning the foundations of quantum theory, there has never been a large conference dedicated to the subject. The 50year anniversary of the theorem seems an opportune time to remedy this oversight. Furthermore, in the last decade, there have been tremendous advances in the field. New life has been breathed into the subject as old conceptual issues have been reexamined from a new informationtheoretic perspective. Importantly, there has been great progress in making the notion of noncontextuality robust to noise and therefore experimentally testable. Finally, there is mounting evidence that the resource that powers many quantum advantages for information processing is contextuality. In particular, it has been shown to underlie the possibility of universal quantum computation. Many groups worldwide are actively engaged in advancing our knowledge on each of these fronts and in deepening our understanding of the distinction between quantum and classical theories through the lens of contextuality. Through this conference, we aim to bring together leading researchers in the field in order to develop a broader perspective on the issues, draw connections between different approaches, foster a more cohesive community, and set objectives for future research.


Quantum Information in Quantum Gravity II
30 talksCollection Number C15041Quantum Information in Quantum Gravity II