Now showing items 1-7 of 7

    • Correlation and Communication via a Quantum Field 

      Simidzija, Petar (University of Waterloo, 2019-07-15)
      We study the ability of qubit detectors to i) extract correlations from, and ii) transmit quantum information through, a quantum field. We start by perturbatively studying the harvesting of correlations from thermal and ...
    • Investigations into quantum light-matter interactions, their approximations and applications 

      Funai, Nicholas (University of Waterloo, 2021-01-26)
      Devoting some thought to the interactions between light and matter quickly conjure a myriad of different possibilities; different models for light and matter, different possible interaction Hamiltonians, different simplifying ...
    • Light-Matter Interaction Models in Relativistic Quantum Information 

      Lopp, Richard (University of Waterloo, 2021-05-21)
      In this thesis, we study the interaction of a first-quantized atomic system with the quantum electromagnetic field within the context of relativistic quantum information (RQI). To that end, we examine common classes of ...
    • Local measurements in Relativistic Quantum Information: localization and signaling 

      Papageorgiou, Maria-Eftychia (University of Waterloo, 2023-12-12)
      In this thesis, we study some foundational aspects of detector models in quantum field theory (QFT) related to signaling and localization, and we analyze certain frictions with relativistic causality. We characterize the ...
    • Quantum fields and machine learning 

      Melgarejo Lermas, Irene (University of Waterloo, 2020-09-25)
      In this thesis, we use detector models to study various properties of quantum fields. One such property is the correlations present in fields. It is known that two uncorrelated detectors, upon coupling to a quantum field, ...
    • Shape & cutoff in superconducting qubits, work fluctuations in correlation creation, & critical commentary 

      McKay, Emma (University of Waterloo, 2019-01-22)
      Part I We apply the Unruh-DeWitt model for a qubit interacting with a quantum field to a superconducting qubit. We use the flexibility of this model, as compared to the spin-boson model used widely in the literature, ...
    • What is a field, what is a particle? 

      Papageorgiou, Maria-Eftychia (University of Waterloo, 2019-01-25)
      Much of the structure of quantum field theory (QFT) is predicated on the principle of locality. Adherence to locality is achieved in Algebraic QFT (AQFT) by the association of algebras of observables with regions of ...


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