Debbie Leung

Debbie Leung profile picture
Associate Faculty
Institute for Quantum Computing (IQC)
Areas of research:
I study the capacity of communicating various form of data (quantum, private, or classical) through quantum channels, focusing on the superadditivity phenomenon. I also study how quantum entanglement, in particular, embezzlement of entanglement, plays a role in quantum information theory.
  • Tolman Postdoctoral Fellow in Theoretical Physics Institute for Quantum Information, Caltech December 2002 - August 2005
  • Postdoctoral Fellow in Workshop on Quantum Computation Mathematical Sciences Research Institute, Berkeley September 2002 - December 2002
  • Postdoctoral Fellow Physics of Information group IBM T.J. Watson Research Center July 2000 - August 2002
  • University Research Chair, University of Waterloo, 2015 - to date
  • Tier II Canada Research Chair in Quantum Communications, 2005-2015
  • D. Leung, A. Nayak, A. Shayeghi\g, D. Touchette\p, P. Yao, and N. Yu, Capacity Approaching Coding for Low Noise Interactive Quantum Communication, Part I: Large Alphabets, IEEE Transactions of Information Theory, 67, 5443-5490 (2021) arXiv: 2001.02818
  • D. Leung, A. Winter, and N. Yu, LOCC protocols with bounded width per round optimize convex functions, Reviews in Mathematical Physics, 2150013 (2021), arXiv: 1904.10985
  • Z. Ji, D. Leung, and T. Vidick, A three-player coherent state embezzlement game'', Quantum 4, 349 (2020) arXiv: 1802.04926.
  • Achieving fault tolerance on capped color codes with few ancilla, Theerapat Tansuwannont and Debbie Leung, arXiv: 2006.03068
  • Capacity approaching codes for interactive quantum communication in the low noise regime, 5th Quantum Software Consortium General Assembly 2021, Track Quantum networks, Networks conference 2021, Amsterdam, Netherlands, online
  • Additive quantities cannot be more than asymptotically continuous, Division of Theoretical Physics, Quantum Information Theory Session, Virtual Canadian Association of Physicists Congress 2021
  • The embezzlement of entanglement and its applications, Quantum Software and Optimisation online workshop, Wallenberg Centre for Quantum Technology, Chalmers University of Technology in Gothenburg, Sweden
  • Embezzlement and applications, Tutte Colloquium, University of Waterloo, Canada
  • Quantum data compression, Stanford Compression Workshop 2021, Stanford, CA, USA
  • Embezzlement and Applications, IBM Quantum / Qiskit Seminar Series (online)
  • Incompressibility of classical distributions, University of New Mexico USA
  • Incompressibility of classical distributions, University of Waterloo Canada
  • Embezzlement and Applications, ICMAT Autonomous University of Madrid
  • Simple proof of non-closure of quantum correlations using embezzlement, International Centre for Mathematical Sciences (ICMS) University of Edinburgh UK
  • Embezzlement and Applications, 19th Asian Quantum Information Science Conference (AQIS) KIAS Seoul Korea
  • The curious capacities of quantum channels, Young Researcher Forum on Quantum Information Science National Tsing Hua University Taiwan
  • The curious capacities of quantum channels, University of Hong Kong