On the qubit routing problem

Cowtan, Alexander and Dilkes, Silas and Duncan, Ross and Krajenbrink, Alexandre and Simmons, Will and Sivarajah, Seyon; van Dam, Wim and Mancinska, Laura, eds. (2019) On the qubit routing problem. In: 14th Conference on the Theory of Quantum Computation, Communication and Cryptography (TQC 2019). Leibniz International Proceedings in Informatics (LIPIcs), 135 . Schloss Dagstuhl - Leibniz-Zentrum für Informatik, USA, 5:1--5:32. ISBN 9783959771122 (https://doi.org/10.4230/LIPIcs.TQC.2019.5)

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Abstract

We introduce a new architecture-agnostic methodology for mapping abstract quantum circuits to realistic quantum computing devices with restricted qubit connectivity, as implemented by Cambridge Quantum Computing’s t|keti compiler. We present empirical results showing the effectiveness of this method in terms of reducing two-qubit gate depth and two-qubit gate count, compared to other implementations.

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