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Q: Fachverband Quantenoptik und Photonik

Q 33: Quantum Information (Quantum Computing) II

Q 33.1: Hauptvortrag

Mittwoch, 13. März 2019, 14:00–14:30, S HS 001 Chemie

Topological Quantum Error Correction: From Concepts to Experiments with Trapped Ions — •Markus Mueller — Swansea University, Swansea, United Kingdom

To date, the construction of large-scale fault-tolerant quantum computers remains a fundamental scientific and technological challenge, due the influence of unavoidable noise. In my talk, I will focus on quantum error correction in trapped-ion quantum processors. After briefly introducing basic concepts of topological quantum error-correcting codes, I will discuss resource-efficient and fault-tolerant protocols to control single and coupled logical qubits of increasing size and robustness. Specifically, I will discuss protocols to fight qubit loss, as caused e.g. by particle loss or electronic leakage processes, in topological color codes. Here, I will show that determining the corresponding qubit loss error threshold is equivalent to a new generalised classical percolation process. Finally, I will comment on recent experimental implementations of quantum error correction building blocks with trapped ions.