Now showing items 1-11 of 11

    • Classical simulations of quantum systems using stabilizer decompositions 

      Qassim, Hammam (University of Waterloo, 2021-02-19)
      One of the state of the art techniques for classically simulating quantum circuits relies on approximating the output state of the circuit by a superposition of stabilizer states. If the number of non-Clifford gates in ...
    • Concepts and methods for benchmarking quantum computers 

      Boone, Kristine (University of Waterloo, 2021-07-09)
      Quantum computers have the potential to bring about a new age of technology, but in order for them to become a reality, the elephant in the room must be addressed, quantum errors. The complexity of quantum errors grows ...
    • Contextuality and Ontological Models: A Tale of Desire and Disappointment 

      Lillystone, Piers (University of Waterloo, 2019-09-23)
      Since being defined by Kochen and Specker, and separately by Bell, contextuality has been proposed as one of the key phenomena that distinguishing quantum theory from classical theories. However, with the rise of quantum ...
    • Exploring Practical Methodologies for the Characterization and Control of Small Quantum Systems 

      Hincks, Ian (University of Waterloo, 2018-09-04)
      We explore methodologies for characterizing and controlling small quantum systems. We are interested in starting with a description of a quantum system, designing estimators for parameters of the system, developing robust ...
    • Non-Markovianity in Logical Fidelity Estimation 

      Caesura, Athena (University of Waterloo, 2021-02-26)
      As quantum devices are progressively scaled and refined, quantum codes will become indispensable to guarantee reliable computation in the presence of noise. Due to the difficulties of characterizing physical noise, direct ...
    • On Realistic Errors in Quantum Computers 

      Skanes-Norman, Joshua (University of Waterloo, 2021-05-27)
      In this thesis, we are concerned with the problem of characterizing noise associated with implementations of quantum circuits. We first explore the notion of error rates of quantum circuits and argue that the semantic ...
    • A Polar Decomposition for Quantum Channels: Theory and Applications 

      Alexander, Matthew (University of Waterloo, 2019-08-23)
      Every potential benefit of quantum computers would be lost without methods to protect the computations from error. Quantum channels provide a framework for understanding error in quantum systems. In general, for a system ...
    • Three Results in Quantum Physics 

      Huq, Jaron Meser (University of Waterloo, 2019-05-09)
      This thesis is split into three disjoint sections. The first deals with two practical issues regarding the use of unitary 2-designs. A simplified description of how to generate elements of the smallest known unitary 2-design ...
    • Topics in Fault-Tolerant Quantum Computation 

      Dawkins, Hillary (University of Waterloo, 2017-01-12)
      This thesis contains the results of research projects broadly related to the pursuit of universal fault-tolerant quantum computation. We are interested in questions such as which resources are required to achieve a quantum ...
    • Understanding sequential measurements in psi-epistemic ontological models 

      Ruebeck, Joshua (University of Waterloo, 2019-08-06)
      Since the famous debates of Einstein & Bohr, physicists have argued about the nature of the quantum state. Is it best thought of as describing the-way-things-are out there in the world, or merely as a description of our ...
    • A walk through quantum noise: a study of error signatures and characterization methods 

      Carignan-Dugas, Arnaud (University of Waterloo, 2019-09-17)
      The construction of large scale quantum computing devices might be one of the most exciting and promising endeavors of the 21st century, but it also comes with many challenges. As quantum computers are supplemented with ...

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