Format results
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Talk
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Discretizing the many-electron Schrodinger Equation
Steven White University of California, Irvine
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Emergence of conformal symmetry in critical spin chains
Ashley Milsted California Institute of Technology
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The continuous multi-scale entanglement renormalization ansatz (cMERA)
Guifre Vidal Alphabet (United States)
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Unitary Networks from the Exact Renormalization of Wavefunctionals
Rob Leigh University of Illinois Urbana-Champaign
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Tensor networks and Legendre transforms
Brian Swingle University of Maryland, College Park
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Talk
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 15
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 14
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 13
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 12
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 11
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 10
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 9
David Cory Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Explorations in Quantum Information - Lecture 8
David Cory Institute for Quantum Computing (IQC)
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Talk
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PSI 2016/2017 - Quantum Information Review - Lecture 12
Michele Mosca Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 11
Michele Mosca Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 10
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 9
Eduardo Martin-Martinez Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 8
Kevin Resch Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 7
Kevin Resch Institute for Quantum Computing (IQC)
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PSI 2016/2017 - Quantum Information Review - Lecture 6
Daniel Gottesman University of Maryland, College Park
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PSI 2016/2017 - Quantum Information Review - Lecture 5
Daniel Gottesman University of Maryland, College Park
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Talk
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Direct experimental reconstruction of the Bloch sphere
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Michael Mazurek Institute for Quantum Computing (IQC)
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Matthew Pusey University of York
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Single-photon test of Hyper-Complex Quantum Theories
Lorenzo Procopio Universität Wien
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Experimental implementation of quantum-coherent mixtures of causal relations
Robert Spekkens Perimeter Institute for Theoretical Physics
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Talk
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Does relativistic causality constrain interference phenomena?
Markus Müller Institute for Quantum Optics and Quantum Information (IQOQI) - Vienna
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Talk
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Gravity Basics - 1
Veronika Hubeny University of California System
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QI Basics - 1
Patrick Hayden Stanford University
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Entanglement - 1
Robert Spekkens Perimeter Institute for Theoretical Physics
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Bell’s Theorem
Adrian Kent University of Cambridge
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GR: Actions and Equations
David Kubiznak Charles University
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A new perspective on holographic entanglement
Matthew Headrick Brandeis University
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QI Basics - 2
John Watrous IBM (Canada)
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Talk
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Welcome and Opening Remarks
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Marina Cortes Institute for Astrophysics and Space Sciences
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Lee Smolin Perimeter Institute for Theoretical Physics
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Neil Turok University of Edinburgh
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The origin of arrows and time I
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David Albert Columbia University
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Steve Weinstein University of Waterloo
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The origin of arrows of time II
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)
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The origin of arrows of time II cont.
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Sean Carroll California Institute of Technology (Caltech) - Division of Physics Mathematics & Astronomy
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Marina Cortes Institute for Astrophysics and Space Sciences
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Tim Koslowski Universidad Nacional Autónoma De Mexico (UNAM)
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Testing time asymmetry in the early universe
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Brian Keating University of California, San Diego
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Andrew Liddle University of Lisbon
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Richard Muller University of California System
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The fate of the big bang
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Abhay Ashtekar Pennsylvania State University
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Neil Turok University of Edinburgh
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Time as Organization – Downward Caustation, Structure and Complexity I
Barbara Drossel Technische Universität Darmstadt
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Time as Organization – Downward Caustation, Structure and Complexity II
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Stuart Kauffman Santa Fe Institute (SFI)
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George Ellis University of Cape Town
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Talk
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Finally making sense of Quantum Mechanics, part 1
Yakir Aharonov Chapman University
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How to count one photon and get a(n average) result of 1000...
Aephraim Steinberg University of Toronto
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The Quantum Tip of the Two-Vector Iceberg
Avshalom Elitzur Israeli Institute for Advanced Research
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The arrow of time for continuous quantum measurements
Andrew Jordan University of Rochester
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Observation of Aharonov-Bohm effect with quantum tunneling
Yutaka Shikano Institute for Molecular Science, National Institutes of Natural Sciences
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Talk
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Protective Measurement and Ergodicity
Yakir Aharonov Chapman University
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Sudden Sharp Forces and Nonlocal Interactions
Yakir Aharonov Chapman University
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Talk
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Gravity Dual of Quantum Information Metric
Tadashi Takayanagi Yukawa Institute for Theoretical Physics
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A new perspective on holographic entanglement
Matthew Headrick Brandeis University
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Universal holographic description of CFT entanglement entropy
Thomas Faulkner University of Illinois Urbana-Champaign
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Geometric Constructs in AdS/CFT
Veronika Hubeny University of California System
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Do black holes create polyamory
Jonathan Oppenheim University College London
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Tensor Network Renormalization and the MERA
Glen Evenbly Georgia Institute of Technology
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Entanglement renormalization for quantum fields
Jutho Haegeman Ghent University
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Holographic quantum error-correcting codes: Toy models for the bulk/boundary correspondence
Fernando Pastawski California Institute of Technology
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Non-abelian symmetries can increase entanglement and induce critical dynamics
Shayan Majidy Perimeter Institute for Theoretical Physics
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Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL
Haowei Shi University of Southern California
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Tensor Networks for Quantum Field Theories II
Tensor Networks for Quantum Field Theories II -
PSI 2016/2017 - Explorations in Quantum Information (Cory)
PSI 2016/2017 - Explorations in Quantum Information (Cory) -
PSI 2016/2017 - Quantum Information (Multiple Lecturers)
PSI 2016/2017 - Quantum Information (Multiple Lecturers) -
Experimental Quantum Foundations
Experimental Quantum Foundations -
Formulating and Finding Higher-Order Interference
Formulating and Finding Higher-Order Interference
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Concepts and Paradoxes in a Quantum Universe
Concepts and Paradoxes in a Quantum Universe
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Quantum Information in Quantum Gravity II
Quantum Information in Quantum Gravity II -
Non-abelian symmetries can increase entanglement and induce critical dynamics
Shayan Majidy Perimeter Institute for Theoretical Physics
Measuring the temperature of your coffee should not change the amount of coffee in your cup. This holds because the operators representing the coffee’s energy and volume commute. The intuitive assumption that conserved quantities, also known as charges, commute, underpins basic physics derivations, like that of the thermal state's form and Onsager coefficients. Yet, operators' failure to commute plays a key role in quantum theory, e.g. underlying uncertainty relations. Lifting this assumption has spawned a growing subfield of quantum many-body physics [1].
How can one argue that charges’ noncommutation caused a result? To isolate the effects of charges’ noncommutation, we created analogous models that differ in whether their charges commute and discovered more entanglement in the noncommuting-charge model [2]. We further introduce noncommuting charges (an SU(2) symmetry) into monitored quantum circuits, circuits with unitary evolutions and mid-circuit projective measurements. Numerically, we find that the SU(2)-symmetric model has a critical phase in place of the area-law phase typically found in these circuits [3]. I will focus on the results from Ref 2 and 3. Time permitting, I'll briefly explain how one can use Lie Algebra theory to build the Hamiltonians necessary for testing the predictions of noncommuting charge physics [4].
[1] Majidy et al. "Noncommuting conserved charges in quantum thermodynamics and beyond." Nat Rev Phys (2023)
[2] Majidy et al. "Non-Abelian symmetry can increase entanglement entropy.” PRB (2023)
[3] Majidy et al. "Critical phase and spin sharpening in SU(2)-symmetric monitored quantum circuits." PRB (2023)
[4] Yunger Halpern and Majidy “How to build Hamiltonians that transport noncommuting charges in quantum thermodynamics” npj QI (2022)---
Zoom link https://pitp.zoom.us/j/97193579200?pwd=MkdmbWo1S2lUcUZtUFpORk5VbnFBdz09
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Bosonic quantum sensing and communication in the presence of loss and noise - VIRTUAL
Haowei Shi University of Southern California
Squeezing has proven to be a powerful tool for suppressing noise in bosonic quantum sensing and communication. However, it is fragile and the resulting quantum advantage is extremely vulnerable to loss and noise. In this seminar, I will first overview the method of formulating loss and noise and thereby characterizing the practical quantum advantages. Then I will present our recent progress on entanglement-assisted protocols using two-mode squeezed-vacuum states, which are robust to loss and noise. I will demonstrate the quantum advantages in three scenarios: dark matter search, absorption spectroscopy, and telecommunication. Notably, we derived the ultimate precision limit of noise sensing and dark matter search. As a result, we found the two-mode squeezed vacuum is the optimal quantum source for dark matter search at the limit of strong squeezing. This optimality extends to entanglement-assisted communication. In each of the presented scenarios, entanglement-assisted protocols yield quantum advantages of orders of magnitude over classical protocols.
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Zoom link https://pitp.zoom.us/j/94873478582?pwd=c1dxNEVtMGx0ZU4vZjRvTU5OakZoUT09