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

30 talksCollection Number C19025
Talk


Simulating Thermal and Quantum Fluctuations in Materials and Molecules
Michele Ceriotti L'Ecole Polytechnique Federale de Lausanne (EPFL)

How to use a Gaussian Boson Sampler to learn from graphstructured data
Maria Schuld University of KwaZuluNatal

Machine learning meets quantum physics
DongLing Deng Tsinghua University


Engineering Programmable Spin Interactions in a NearConcentric Cavity
Emily Davis Stanford University

Alleviating the sign structure of quantum states
Giacomo Torlai Flatiron Institute

Navigating the quantum computing field as a high school student
Tanisha Bassan The Knowledge Society


PSI 2018/2019  Explorations in Quantum Information (MartinMartinez)
13 talksCollection Number C19019Talk

PSI 2018/2019  Explorations in Quantum Information  Lecture 1
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 2
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 3
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 4
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 5
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 6
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 7
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2018/2019  Explorations in Quantum Information  Lecture 8
Eduardo MartinMartinez Institute for Quantum Computing (IQC)


PSI 2018/2019  Quantum Information Review (Gottesman)
15 talksCollection Number C19010Talk

PSI 2018/2019  Quantum Information Review  Lecture 1
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 2
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 3
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 4
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 5
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 6
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 7
Daniel Gottesman University of Maryland, College Park

PSI 2018/2019  Quantum Information Review  Lecture 8
Daniel Gottesman University of Maryland, College Park


Foundations of Quantum Mechanics
17 talksCollection Number C18020Talk

Welcome and Opening Remarks
Lucien Hardy Perimeter Institute for Theoretical Physics



Local quantum operations and causality
Robert Oeckl Universidad Nacional Autónoma De Mexico (UNAM)

Towards synthetic Euclidean quantum field theory
Tobias Fritz Universität Innsbruck

Almost quantum correlations violate the norestriction hypothesis
Ana Belen Sainz Gdańsk University of Technology

A deviceindependent approach to testing physical theories from finite data
YeongCherng Liang National Cheng Kung University

Quantum axiomatics à la carte
Alexander Wilce Susquehanna University


PSI 2017/2018  Relativistic Quantum Information (MartinMartinez)
14 talksCollection Number C17051Talk

PSI 2017/2018  Relativistic Quantum Information  Lecture 1
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 2
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 3
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 4
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 5
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 6
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 7
Eduardo MartinMartinez Institute for Quantum Computing (IQC)

PSI 2017/2018  Relativistic Quantum Information  Lecture 8
Eduardo MartinMartinez Institute for Quantum Computing (IQC)


Talk

Semisimple Hopf algebras and fusion categories
Cesar Galindo Universidad de los Andes

The Hopf C*algebraic quantum double models  symmetries beyond group theory
Andreas Bauer Freie Universität Berlin

Modular categories and the Witt group
Michael Mueger Radboud Universiteit Nijmegen

Topological Quantum Computation
Eric Rowell Texas A&M University

Gapped phases of matter vs. Topological field theories
Davide Gaiotto Perimeter Institute for Theoretical Physics

An Introduction to Hopf Algebra Gauge Theory
Derek Wise University of ErlangenNuremberg

Kitaev lattice models as a Hopf algebra gauge theory
Catherine Meusburger University of ErlangenNuremberg

Topological defects and highercategorical structures
Jurgen Fuchs Karlstad University


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

Welcome and Opening Remarks
Robert Spekkens Perimeter Institute for Theoretical Physics

Quantum Mechanics in a New Key
Simon Kochen Princeton University

What do we learn about quantum theory from KochenSpecker quantum contextuality?
Adan Cabello Universidad de Sevilla

Noncontextuality: how we should define it, why it is natural, and what to do about its failure
Robert Spekkens Perimeter Institute for Theoretical Physics

Towards a mathematical theory of contextuality
Samson Abramsky University of Oxford

KochenSpecker contextuality: a hypergraph approach with operational equivalences
Ana Belen Sainz Gdańsk University of Technology

The contextual fraction as a measure of contextuality
Shane Mansfield University of Edinburgh

Nonlocality and contextuality as finetuning
Eric Cavalcanti Griffith University


Tensor Networks for Quantum Field Theories II
18 talksCollection Number C17011Talk

Discretizing the manyelectron Schrodinger Equation
Steven White University of California, Irvine

Emergence of conformal symmetry in critical spin chains
Ashley Milsted California Institute of Technology



Bridging Perturbative Expansions with Tensor Networks
Jutho Haegeman Ghent University

The continuous multiscale entanglement renormalization ansatz (cMERA)
Guifre Vidal Alphabet (United States)

Unitary Networks from the Exact Renormalization of Wavefunctionals
Rob Leigh University of Illinois UrbanaChampaign

Tensor networks and Legendre transforms
Brian Swingle Brandeis University


PSI 2016/2017  Explorations in Quantum Information (Cory)
14 talksCollection Number C17009Talk

PSI 2016/2017  Explorations in Quantum Information  Lecture 1
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 2
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 3
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 4
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 5
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 7
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 8
David Cory Institute for Quantum Computing (IQC)

PSI 2016/2017  Explorations in Quantum Information  Lecture 9
David Cory Institute for Quantum Computing (IQC)


PSI 2016/2017  Quantum Information (Multiple Lecturers)
12 talksCollection Number C17005Talk

PSI 2016/2017  Quantum Information Review  Lecture 1
Richard Cleve Institute for Quantum Computing (IQC)

PSI 2016/2017  Quantum Information Review  Lecture 2
Richard Cleve Institute for Quantum Computing (IQC)

PSI 2016/2017  Quantum Information Review  Lecture 3
Debbie Leung Institute for Quantum Computing (IQC)

PSI 2016/2017  Quantum Information Review  Lecture 4
Debbie Leung Institute for Quantum Computing (IQC)

PSI 2016/2017  Quantum Information Review  Lecture 5
Daniel Gottesman University of Maryland, College Park

PSI 2016/2017  Quantum Information Review  Lecture 6
Daniel Gottesman University of Maryland, College Park

PSI 2016/2017  Quantum Information Review  Lecture 7
Kevin Resch Institute for Quantum Computing (IQC)

PSI 2016/2017  Quantum Information Review  Lecture 8
Kevin Resch Institute for Quantum Computing (IQC)


It from Qubit Summer School
62 talksCollection Number C16003Talk


Gravity Basics  1
Veronika Hubeny University of California, Davis

QI Basics  1
Patrick Hayden Stanford University

Entanglement  1
Robert Spekkens Perimeter Institute for Theoretical Physics

GR: Actions and Equations
David Kubiznak Charles University

A new perspective on holographic entanglement
Matthew Headrick Brandeis University

Bell’s Theorem
Adrian Kent University of Cambridge

QI Basics  2
John Watrous IBM (Canada)


Quantum Information in Quantum Gravity II
31 talksCollection Number C15041Talk

Gravity Dual of Quantum Information Metric
Tadashi Takayanagi Yukawa Institute for Theoretical Physics

A new perspective on holographic entanglement
Matthew Headrick Brandeis University

Universal holographic description of CFT entanglement entropy
Thomas Faulkner University of Illinois UrbanaChampaign

Geometric Constructs in AdS/CFT
Veronika Hubeny University of California, Davis

Do black holes create polyamory
Jonathan Oppenheim University College London

Tensor Network Renormalization and the MERA
Glen Evenbly Georgia Institute of Technology

Entanglement renormalization for quantum fields
Jutho Haegeman Ghent University

Holographic quantum errorcorrecting codes: Toy models for the bulk/boundary correspondence
Fernando Pastawski California Institute of Technology


Machine Learning for Quantum Design
30 talksCollection Number C19025Machine learning techniques are rapidly being adopted into the field of quantum manybody physics including condensed matter theory experiment and quantum information science. The steady increase in data being produced by highlycontrolled quantum experiments brings the potential of machine learning algorithms to the forefront of scientific advancement. Particularly exciting is the prospect of using machine learning for the discovery and design of quantum materials devices and computers. In order to make progress the field must address a number of fundamental questions related to the challenges of studying manybody quantum mechanics using classical computing algorithms and hardware. The goal of this conference is to bring together experts in computational physics machine learning and quantum information to make headway on a number of related topics including: Datadrive quantum state reconstruction Machine learning strategies for quantum error correction Neuralnetwork based wavefunctions Nearterm prospects for data from quantum devices Machine learning for quantum algorithm discovery Registration for this event is now closed

PSI 2018/2019  Explorations in Quantum Information (MartinMartinez)
13 talksCollection Number C19019PSI 2018/2019  Explorations in Quantum Information (MartinMartinez) 
PSI 2018/2019  Quantum Information Review (Gottesman)
15 talksCollection Number C19010PSI 2018/2019  Quantum Information Review (Gottesman) 
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

PSI 2017/2018  Relativistic Quantum Information (MartinMartinez)
14 talksCollection Number C17051PSI 2017/2018  Relativistic Quantum Information (MartinMartinez) 
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.

Tensor Networks for Quantum Field Theories II
18 talksCollection Number C17011Tensor Networks for Quantum Field Theories II 
PSI 2016/2017  Explorations in Quantum Information (Cory)
14 talksCollection Number C17009PSI 2016/2017  Explorations in Quantum Information (Cory) 
PSI 2016/2017  Quantum Information (Multiple Lecturers)
12 talksCollection Number C17005PSI 2016/2017  Quantum Information (Multiple Lecturers) 

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