Topological Quantum Computation: From Concepts to Experiments
July 17th, 2017 MARKUS MÜLLER Department of Physics
Swansea University

Quantum computers hold the promise to allow one to solve problems that cannot be efficiently treated on classical computers. To date, the construction of a fault-tolerant quantum computer remains a fundamental scientific and technological challenge, due the influence of unavoidable noise which affects the fragile quantum states. In our talk, we will first introduce basic concepts of quantum error correction based on topological quantum error-correcting codes, which allow one to protect quantum information during storage and processing by distributing logical quantum information over quantum many-body spin systems. We then discuss progress on experimental quantum error correction, in particular the realisation of a minimal topological color code with trapped ions, which for the first time demonstrated basic quantum computations on an encoded qubit. In the second part, I will present recent theory work of our group and experimental progress towards fault-tolerant quantum error correction and control of coupled logical qubits of increasing size and robustness in scalable trapped-ion architectures.

Seminar, July 17, 2017, 15:00. Seminar Room

Hosted by Prof. Maciej Lewenstein