科学研究

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【Seminar】 Experimental quantum error correction with binomial bosonic codes

Speaker


Dr. Luyan Sun(孙麓岩)

Institute for Interdisciplinary Information Sciences, Tsinghua University


Host


Prof. Ying Li  (李颖 研究员)


Date&Time


June 20, 2019 (Thursday)    10:30~11:30AM


Venue


C305 Conference Room, 3rd Floor


Abstract


Quantum error correction (QEC) is necessary for a practical quantum computer because of the inevitable coupling of quantum systems with the uncontrolled environment. A measurement-based QEC requires rapid extraction of error syndromes without disturbing the stored information and fast real-time feedback control for error corrections. Encoding quantum information on photonic states in a microwave cavity for QEC has attracted a lot of interests because of its hardware efficiency. This scheme benefits from the infinite dimensional Hilbert space of a harmonic oscillator for redundant information encoding and only one error syndrome that needs to be monitored. In this talk, I will describe our experimental realization of both repetitive QEC with a binomial bosonic code in a circuit quantum electrodynamics architecture and full control on the logical qubit [1]. I will also discuss our recent experimental realization of an error transparent gate.

[1] L. Hu, Y. Ma, W. Cai, X. Mu, Y. Xu, W. Wang, Y. Wu, H. Wang, Y. P. Song, C.-L. Zou, S. M. Girvin, L-M. Duan and L. Sun, Nature Physics 15, 503 (2019).


About the Speaker


Dr. Luyan Sun finished his PhD at University of Maryland, College Park, in 2008. He then moved to Yale University and started to work on quantum computation based on superconducting circuits as a post-doctor. Since September 2013, Dr. Sun has worked in the Institute for Interdisciplinary Information Sciences at Tsinghua University with his own lab on superconducting quantum computation. His research interests include quantum feedback, quantum error correction, quantum control, and quantum metrology.


All interested are welcome!