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2022 CAP Congress / Congrès de l'ACP 2022

5–11 Jun 2022
McMaster University
America/Toronto timezone
Welcome to the 2022 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2022!

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Session

W1-2 Quantum Theory (DTP) | Théorie quantique (DPT)

W1-2
8 Jun 2022, 10:45
McMaster University

McMaster University

Conveners

W1-2 Quantum Theory (DTP) | Théorie quantique (DPT)

  • Randy Lewis

Presentation materials

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  1. 3118. (I) Quantum Foundations Meets Causal Inference
    Robert Spekkens (Perimeter Institute for Theoretical Physics)
    08/06/2022, 10:45
    Theoretical Physics / Physique théorique (DTP-DPT)
    Invited Speaker / Conférencier(ère) invité(e)

    Can the effectiveness of a medical treatment be determined without the expense of a randomized controlled trial? Can the impact of a new policy be disentangled from other factors that happen to vary at the same time? Questions such as these are the purview of the field of causal inference, a general-purpose science of cause and effect, applicable in domains ranging from epidemiology to...

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  2. 3226. (G*) Locality in quasi-Hermitian quantum theory
    Jacob Barnett
    08/06/2022, 11:15
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

    Quasi-Hermitian quantum theory generalizes quantum theory while preserving unitarity and the reality of expectation values. Unitarity is defined with respect to a new inner product, associated to a positive definite operator referred to as the metric.

    In general, the metric operator can be an entangled operator. Thus, it's natural to ask whether quasi-Hermitian systems with a notion of...

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  3. 3303. (U*) Non-perturbative Extraction of Tripartite Vacuum Entanglement
    Diana Mendez Avalos
    08/06/2022, 11:30
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Undergraduate Student) / Compétition orale (Étudiant(e) du 1er cycle)

    Entanglement harvesting – the process of entangling qubits by extracting vacuum entanglement from a quantum field – provides information about the structure of the quantum vacuum. While there has been much work done on harvesting bipartite entanglement, the multipartite structure of the vacuum has received virtually no attention. Here I report on the first results of an investigation of...

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  4. 3338. (G*) Channel capacity of relativistic quantum communication with rapid interaction
    Kensuke Gallock Yoshimura
    08/06/2022, 11:45
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

    We study nonperturbatively the transmission of classical and quantum information in globally hyperbolic spacetimes, where the communication channel is between two qubit detectors interacting with a quantized massless scalar field via delta-coupling interaction. This interaction approximates very rapid detector-field interaction, effectively occurring at a single instant in time for each...

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  5. 3314. (G*) Variationally Scheduled Quantum Simulation
    Samantha Buck (University of Guelph)
    08/06/2022, 12:00
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

    Eigenstate preparation is ubiquitous in quantum computing, and a standard approach for generating the lowest-energy states of a given system is by employing adiabatic state preparation (ASP). In the present work, we investigate a variational method for determining the optimal scheduling procedure within the context of ASP. In the absence of quantum error correction, running a quantum device...

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