Abstract:Quantum computers have finally reached a level of complexity where real-time quantum error correction is possible. Current systems have shown an advantage using encoded qubits for some experiments, but no experiment has shown a decisive victory of encoded qubits over physical qubits. I will review the current state-of-the-art and then provide some lessons learned from adapting fault-tolerant quantum circuits to ion trap hardware. I will focus on the interplay of physical noise with the quantum error correction code and discuss ways to take advantage of the noise structure through subspace selection, syndrome extraction methods, and improved decoders.
JQI Seminars are held on Mondays during Fall and Spring semesters at 11:00 a.m. Eastern Time in Room 2400 of the Atlantic Building. University of Maryland affiliates may participate using Zoom. The seminars are also livestreamed on the JQI YouTube channel (https://www.youtube.com/user/JQInews), which supports audience participation in the chat interface.