Tuesday, December 4, 2018
3:00 pm

IQI Weekly Seminar

Universal fault-tolerant measurement-based quantum computation
Sam Roberts, University of Sydney

Abstract: Certain physical systems that one might consider for fault-tolerant quantum computing where qubits do not readily interact, for instance photons, are better suited for measurement-based quantum-computational protocols. We develop a framework to map fault-tolerant procedures for quantum computation that have been natively designed for use with stabilizer codes onto a measurement-based protocol, allowing us to take advantage of the wealth of recent developments from the field of circuit-based fault-tolerant quantum computation with promising alternative architectures. We derive our framework by regarding measurement-based quantum computation as a specific case of gauge fixing where the gauge group of the underlying subsystem code is the union of the stabilizer group of a resource state and a single-qubit measurement pattern. To demonstrate our new framework we construct a new model of universal quantum computation based on the braiding and fusion of foliated topological defects that are akin to Majorana modes.

Joint work with Benjamin J. Brown














Contact Bonnie Leung bjleung@caltech.edu at 626.395.4964
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