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Yan, Xiruo

University of British Columbia

Universal quantum computing holds the promise to fundamentally change today's information-based society, yet a hardware platform that will provide a clear path to fault-tolerant quantum computing remains elusive. This thesis describes a proposed quantum computer architecture that involves the use of circuit-bound photons to build cluster states and perform one-way measurement-based quantum computations on arrays of long-coherence-time solid state spin-qubits in silicon. The architecture is specified from the completely abstract 3D graph state level, down to a 2D topography that can in principle be realized using known integrated photonic fabrication technologies, and finally to a schematic physical components level, again assuming known nanofabrication techniques could be employed for their rendering. After describing the steps required to utilize this architecture to build error-correctable resource states for quantum computation, a detailed analysis of how dominant physical-level errors would propagate through the full computational stack to circuit-level errors that could be identified and corrected (to achieve fault tolerance) is provided. Although no explicit physical-level components fully compatible with the proposed architecture are demonstrated, key engineering challenges and possible avenues for rendering such components are offered, and progress towards physically realizing them is reported in a silicon photonic platform.

Text

2023-04-19

Attribution-NonCommercial-NoDerivatives 4.0 International

http://hdl.handle.net/2429/84335

Physics

University of British Columbia

UBCV

http://creativecommons.org/licenses/by-nc-nd/4.0/