Browsing Theses by Subject "entanglement"
Now showing items 21-33 of 33
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Quantum Compression and Quantum Learning via Information Theory
(University of Waterloo, 2020-12-21)This thesis consists of two parts: quantum compression and quantum learning theory. A common theme between these problems is that we study them through the lens of information theory. We first study the task of visible ... -
Quantum Strategies and Local Operations
(University of Waterloo, 2010-01-06)This thesis is divided into two parts. In Part I we introduce a new formalism for quantum strategies, which specify the actions of one party in any multi-party interaction involving the exchange of multiple quantum messages ... -
Quantum tests of causal structures and non-orthogonal states
(University of Waterloo, 2014-06-13)This thesis details two experimental tests that can be applied to particular quantum states to reveal important information. We begin by discussing the relevant background in quantum information. We introduce qubits and ... -
Renormalization, Entanglement and Continuous Tensor Networks
(University of Waterloo, 2020-07-07)The study of the ground states of local Hamiltonians in quantum many-body and quantum field theoretic systems is a source of many research problems of great complexity. Almost in its entirety, this thesis deals with ... -
rinse and repeat
(University of Waterloo, 2023-05-26)rinse and repeat is a collaborative thesis exhibition of art created by my plant collaborators and I that uses the visual language of sculpture, photography, performance, audio narratives, and collaboration to question the ... -
Salvaging on the Coast of Erebus Bay: An Analysis of Inuit Interaction with Material from the Franklin Expedition
(University of Waterloo, 2018-01-02)Over the course of the 19th century, many European explorers sailed in search of a Northwest Passage through the Canadian Arctic. These journeys brought them into territory occupied by Inuit, who both traded with the ... -
Sensing the shape of spacetime: detector response and entanglement harvesting in curved space
(University of Waterloo, 2019-01-24)This thesis seeks to understand what information Unruh-DeWitt detectors can gain about the structure of spacetime. By coupling to the quantum state of a field on a curved space, the detectors can gain information about ... -
Tensors: Entanglement, Geometry, and Combinatorics
(University of Waterloo, 2022-04-26)In this thesis, we use algebraic-geometric and combinatorial techniques to study tensor decompositions, with applications in quantum information theory, algebraic complexity theory, and algebraic statistics. A tensor is a ... -
An Ultrafast Source of Polarization Entangled Photon Pairs based on a Sagnac Interferometer
(University of Waterloo, 2009-01-26)This thesis describes the design, development, and implementation of a pulsed source of polarization-entangled photons using spontaneous parametric down-conversion in a Sagnac interferometer. A tangle of 0.9286 ± 0.0015, ... -
The Unruh-DeWitt Detector Model: Modified Dispersion and Nonlinear Couplings
(University of Waterloo, 2021-09-30)In this work, we employ the Unruh-DeWitt (UDW) detector model to various ends. We present applications of this relativistic detector model to quantum optics, including decoherence in optical cavities and non-linear quantum ... -
Variations on PIGS: Non-standard approaches for imaginary-time path integrals
(University of Waterloo, 2015-08-21)The second Rényi entropy has been used as a measure of entanglement in various model systems, including those on a lattice and in the continuum. The present work focuses on extending the existing ideas to measurement of ... -
What can detectors detect?
(University of Waterloo, 2021-01-29)This thesis is focused on using a pair of Unruh-DeWitt detectors, which interact locally with a quantum field, to gain information about properties of the field and the underlying spacetime. First, we consider a massless ... -
Wigner negativity on the sphere
(University of Waterloo, 2023-08-15)The rise of quantum information theory has largely vindicated the long-held belief that Wigner negativity is an indicator of genuine nonclassicality in quantum systems. This thesis explores its manifestation in spin-j ...