Dresden 2026 – scientific programme
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QI: Fachverband Quanteninformation
QI 14: Quantum Information Poster Session
QI 14.13: Poster
Wednesday, March 11, 2026, 18:00–21:00, P4
Quantum error mitigation on a bosonic quantum processing unit — •Corvin Lenz1, Tanay Roy2, Yao Lu2, and Peter Orth1 — 1Theoretische Physik, Universität des Saarlandes, 66123 Saarbrücken, Germany — 2Superconducting Quantum Materials and Systems Division, Fermi National Accelerator Laboratory, Batavia, IL 60510, USA
Bosonic processing units offer a scalable platform for continuous-variable quantum computation, but their interaction with noisy ancillary systems introduces significant errors that must be mitigated for reliable performance.
In this work, we simulate a bosonic qudit dispersively coupled to a two-level transmon, controlled via pulse-based external drives. Using process tomography on a synthesized, universal gate set, we characterize gate-dependent error channels arising from transmon-induced noise. We then apply probabilistic error cancellation (PEC) as an error mitigation technique, which reduces the impact of noise without relying on full fault-tolerant schemes.
Our results demonstrate a substantial improvement in individual gate performances, highlighting the effectiveness of PEC for error mitigation.
Keywords: Bosonic quantum computing; Quantum error mitigation; Pulse engineering; Gate tomography; Probabilistic error cancellation