Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 4 of 4 for “"Coherent Errors"”.
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The Many Phases of the Surface Code: Coherent Errors and Many-Body Localisation
… we study the behaviour of the surface code under coherent errors, which create superpositions of excited states, and we probe topological many body localization (MBL) which protects topological order for all eigenstates. In the first strand, we develop an interpretation of the error correction …
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Randomized Benchmarking Simulations of Quantum Gate Sequences with Z-gate Virtualization
… gate operations. Single and two-qubit gate errors lead to reductions in the average fidelity of quantum gate sequences. Using the Z-gate virtualization procedure, the average sequence fidelity of single-qubit gate sequences can be increased. In two-qubit gate sequences containing the iSWAP …
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Calibration and Utilization of High-Fidelity Two-Qubit Operations
… two-qubit gates are a major source of those errors. In this thesis, we calibrate high-fidelity CZ and CPhase gates for flux-tunable transmon qubits. We develop a new technique for mitigating coherent errors in twoqubit gates called quantum measurement emulation (QME). We use this technique to …
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Quantum Error Correction for Physically Inspired Error Models
… on trapped ion systems, although many of the errors we consider also occur in other hardware implementations. </p><p>The majority of this dissertation is concerned with taking advantage of the structure found in experimental errors to maximize system performance. Using numerical simulation, we …