Tim Byrnes

Assistant Professor
Room 1616, National Institute of Informatics


Apr 2010-                      Assistant Professor, National Institute of Informatics
Nov 2006-Mar 2010    Project researcher, University of Tokyo, Japan
Apr 2005-Oct 2006      JSPS postdoctoral fellow, National Institute of Informatics
Nov 2004-Mar 2005   Project researcher, National Institute of Informatics, Tokyo, Japan
Apr 2003-Oct 2003      Research assistant, University of New South Wales
Apr 1999-Apr 2003      Ph.D., University of New South Wales, Australia


Tim Byrnes completed his PhD at the University of New South Wales in Sydney, Australia in the fields of condensed matter physics and high energy physics under the supervision of Prof. Chris Hamer.  During this time he worked on applications of  DMRG (Density Matrix Renomalization Group), a powerful method for solving 1D quantum many-body problems, to lattice gauge theories.  He then moved to Tokyo, Japan to commence a postdoctoral fellowship with Prof. Yoshihisa Yamamoto in the field of quantum information at the National Institute of Informatics and the University of Tokyo.  There he worked on topics related to quantum simulation, such as methods of solving lattice gauge theories on a quantum computer, and semiconductor implementations of a quantum simulator.  He has worked on the theory of Bose-Einstein condensation in exciton-polariton systems, such as the BEC-BCS crossover and applications to the generation of non-classical light.   He is now Assistant Professor at New York University (Shanghai campus), where he examines Bose-Einstein condensates for various applications in quantum information technology.


Selected publications
  1. Tim Byrnes, Kai Wen, Yoshihisa Yamamoto, “Macroscopic quantum computation using Bose-Einstein condensates“,
    Phys. Rev A   85, 040306(R) (2012).
  2. Tim Byrnes, Tomoyuki Horikiri, Natsuko Ishida, Yoshihisa Yamamoto, “A BCS wavefunction approach to the BEC-BCS crossover of exciton-polariton condensates“, Phys. Rev. Lett.   105, 186402 (2010).
  3. C.W. Lai, N. Y. Kim, S. Utsunomiya, G. Roumpos, H. Deng, M. D. Fraser, T. Byrnes, P. Recher, N. Kumada, T. Fujisawa and Y. Yamamoto, “Coherent zero-state and π-state in an exciton-polariton condensate array”, Nature 450, 529 (2007).
  4. Tim Byrnes, Patrik Recher, Na Young Kim, Shoko Utsunomiya, Yoshihisa Yamamoto, “Quantum simulator for the Hubbard model with long-range Coulomb interactions using surface acoustic waves”, Phys. Rev. Lett. 99, 016405 (2007).
  5. Tim Byrnes and Yoshihisa Yamamoto, “Simulating lattice gauge theories on a quantum computer”, Phys. Rev. A 73, 022328 (2006).
  6. T. Byrnes, P. Sriganesh, R.J. Bursill, C.J. Hamer, ”Density Matrix Renormalisation Group Approach to the Massive Schwinger Model”, Phys. Rev. D 66, 013002 (2002).