This talk will provide an overview of bosonic-encoding-based quantum error correction (QEC) and experimental implementations in circuit QED systems. The talk will start with the introduction of the background of QEC, followed by an overview of recent experimental progresses with conventional encoding schemes, where a logic qubit is encoded with multiple physical qubits. Then, I will introduce an alternative strategy that leverages the large Hilbert space of a single bosonic mode to realize QEC, and give a review on experimental demonstrations in circuit quantum electrodynamics (QED) systems. Finally, I will report our recent QEC work, where we realized the first experiment to beat the break-even point with a discrete-variable-encoded qubit, performed in a circuit QED architecture.
Shibiao Zheng received his Ph.D. in 1997 from University of Science and Technology of China, where he worked on theoretical aspects of quantum state manipulation and quantum information processing with cavity quantum electrodynamics (QED) systems. Since then he has been working at Physics Department of Fuzhou University. His research covers a wide range of topics, including quantum computation, quantum phase transition, topological physics, and non-Hermitian physics. He is currently a Professor of Physics and the leader of the Fujian Key Laboratory of Quantum Information and Quantum Optics.
Seminar by the NYU-ECNU Institute of Physics at NYU Shanghai