My PhD student Siyuan NIU has successfully defended her dissertation titled “Circuit Compilation and Error Mitigation for Near-term Quantum Computing.” This is a huge achievement despite all the pandemic challenges. Many congratulations to Siyuan on this excellent accomplishment, and it was a pleasure to supervise and work with her on this exciting research topic.
The members of the jury were:
Isabelle Philip Directrice de Recherche, Université de Montpellier Examinateur
Aida Todri-Sanial Directrice de Recherche, Université de Montpellier Directrice de thèse
Carmen García Almudéver Professeur, Université polytechnique de Valence Rapporteur
Robert Wille Professeur, Université technique de Munich Rapporteur
Eric Bourreau Professeur, Université de Montpellier Examinateur
Gilles Burel Professeur, Université Bretagne Occidentale Examinateur
Gonzalaz-Zalba Fernando Lecturer, Université de Cambridge Invited
Jean-Michel Torres IBM Quantum Invited
Quantum computing promises to address classically intractable problems. It has been rapidly growing in recent years, and several quantum platforms based on different technologies have been proposed, either from academia or industry. Quantum algorithms have also been developed to outperform their classical counterparts in theory. Despite the progress, today’s quantum hardware is still sensitive to noise and difficult to control, which prevents the demonstration of quantum advantage on near-term quantum computers. There is a gap between the resources needed for quantum algorithms and the noisy hardware implementations. This dissertation aims at closing this gap with the help of hardware-software co-design, focusing on circuit compilation and error mitigation. In particular, this dissertation investigates (1) qubit mapping problem to compile a circuit on the near-term quantum hardware considering the hardware constraints. (2) multi-programming mechanism to improve the near-term quantum hardware utilization. (3) cross-platform benchmarking to evaluate the multi-programming technique on different quantum platforms. (4) dynamical decoupling to reduce the decoherence error and crosstalk. The dissertation is concluded by discussing the future research directions to enable quantum applications on near-term quantum hardware.