• (Non)-Invertible Topology in Quantum Field Theory 

  Yu, Matthew (University of Waterloo, 2023-06-05)

  This thesis aims to highlight aspects of mathematics and physics that arise in topological field theories. We will consider invertible and noninvertible topological theories. In the former case, we compute the classification ...

• Weak Coherent Pulse Source and Polarization Control for Quantum Key Distribution 

  Wu, Wilson (University of Waterloo, 2023-05-30)

  The Quantum EncrYption and Science Satellite will demonstrate quantum communication from space. One demonstration will be a satellite uplink using a weak coherent pulse source. This thesis will discuss work in minimizing ...

• Aspects of Anomaly in Condensed Matter Physics 

  Ye, Weicheng (University of Waterloo, 2023-05-30)

  Anomalies have proven to be an important tool for unraveling the enigmatic properties of strongly-coupled condensed matter systems. Especially, it provides powerful constraints on the emergibility problem, i.e., whether a ...

• The Roles of Causal Propagator in Relativistic Quantum Information 

  Tjoa, Erickson (University of Waterloo, 2023-05-29)

  This thesis focuses on the roles of causal propagator — the expectation value of the field commutator — in relativistic quantum information. Consider two observers Alice and Bob, each carrying a two-level quantum system ...

• Construction of a Shielded Thermal Hall Measurement Device 

  Biggart, Kaylee (University of Waterloo, 2023-05-26)

  A shielded thermal Hall experimental setup is being constructed and is nearing completion. An existing conventional thermal conductivity experiment was retrofit to perform thermal Hall measurements, which included the ...

• Locality and Exceptional Points in Pseudo-Hermitian Physics 

  Barnett, Jacob (University of Waterloo, 2023-05-26)

  Pseudo-Hermitian operators generalize the concept of Hermiticity. Included in this class of operators are the quasi-Hermitian operators, which define a generalization of quantum theory with real-valued measurement outcomes ...

• Representation, Characterization, and Mitigation of Noise in Quantum Processors 

  Lin, Junan (University of Waterloo, 2023-05-26)

  Quantum computers have the potential to outperform classical computers on several families of important problems, and have a great potential to revolutionize our understanding of computational models. However, the presence ...

• Tracing galaxy evolution through the reconstruction of their star formation histories 

  Webb, Kristi (University of Waterloo, 2023-05-24)

  This thesis studies the star formation histories (SFHs) of galaxies in order to understand the nature of 'quenching.' The suppression of star formation, i.e., quenching, over the history of the Universe results in a growing ...

• Quantum Aspects of Black Holes: From Microstates to Echoes and Somewhere In-Between 

  Saraswat, Krishan (University of Waterloo, 2023-05-23)

  In this thesis we explore quantum aspects of black holes from a variety of perspectives. In part I of this thesis we are motivated by the black hole information paradox to explore the idea of gravitational wave echoes ...

• Advancing the robustness of polarization and time bin quantum key distribution for free-space channels 

  Tannous, Ramy (University of Waterloo, 2023-05-15)

  Quantum networks are an emerging technology that aims to harness the power of quantum mechanics to revolutionize communication and computation. Many countries are establishing national quantum networks to modernizing their ...

• Superconducting flux circuits for coherent quantum annealing 

  Dai, Xi (University of Waterloo, 2023-05-04)

  Quantum annealing is a method with the potential to solve hard optimization problems faster than any classical method. In the near term, quantum annealing is particularly appealing due to its low control requirement, ...

• Magnetic Excitations in Transport Measurements of Novel Quantum Materials 

  Reid, Jennifer (University of Waterloo, 2023-04-27)

  Quantum materials offer rich possibilities for quasiparticles that can revolutionalize our technology. The discovery of novel delocalized magnetic excitations in transport measurements implies that such quasiparticles are ...

• Stable polymer glasses 

  Yin, Junjie (University of Waterloo, 2023-04-26)

  This thesis presents investigations on stable polymer glasses prepared through physical vapour deposition from different perspectives. This is the first time that polymers have been used in simple vapour deposition and ...

• Pre-Privacy Amplification: A Post-Processing Technique for Quantum Key Distribution with Application to the Simplified Trusted Relay 

  Burniston, John (University of Waterloo, 2023-04-26)

  Until quantum repeaters and quantum error correcting codes can be made commercially viable, long distance quantum key distribution (QKD) will continue to rely on trusted relay satellites. Strongly constrained by weight ...

• Characterization of Detector and Electron Source for Inverse Photoemission Spectrometer 

  Qi, Yuxuan (University of Waterloo, 2023-02-17)

  The inverse photo-emission spectroscopy (IPES) is a powerful tool to probe the unoccupied energy states of materials, such the surface states of metals or the unoccupied states of high temperature superconductors. IPES ...

• Symmetry Breaking, Order-by-Disorder, Fragmentation, and Spin-Liquids in the Magnetic Pyrochlore Lattice with Anisotropic Interactions 

  Lozano Gomez, Daniel (University of Waterloo, 2023-01-26)

  Within the study of frustrated magnetism, the pyrochlore lattice is deemed a fruitful ground where phenomena such as quantum and thermal order-by-disorder, moment fragmentation, and spin-liquids, both quantum and classical, ...

• Analysis of the Thermal Fisher Information in 2+1 Dimensional Black Hole Spacetimes 

  Patterson, Everett Avison (University of Waterloo, 2023-01-24)

  In the past decade, relativistic quantum information (RQI) has presented itself as a promising avenue for examining the interaction between relativistic and quantum effects. This is most commonly achieved by coupling ...

• Re-visiting the Radio-Mechanical Feedback in Brightest Cluster Galaxies 

  Tamhane, Prathamesh (University of Waterloo, 2023-01-23)

  The self-regulated feedback from the Active Galactic Nucleus (AGN) plays a key role in the formation and evolution of galaxies by heating and expelling gas in galaxies. The goal of this thesis is to investigate the role ...

• Electronic Transport Properties in Single-layer CVD graphene 

  Sakuragi, Mai (University of Waterloo, 2023-01-23)

  Graphene is a two-dimensional material of carbon atoms possessing a metallic nature and the low-energy quasiparticles behave as massless Dirac fermions. The unique electronic properties of graphene inspire many researches ...

• Superconducting Proximity Effect in Nanowire Josephson Junctions 

  Gharavi, Kaveh (University of Waterloo, 2023-01-13)

  Semiconducting nanowires contacted with superconductors are an interesting class of hybrid mesoscopic devices, in which charge transport is quantum mechanical due to the confinement potential of the nanowire, as well as ...

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