RQC Seminar

137th RQC Seminar

  • Speaker

    Prof. Guang-Yin Chen
    ( Dept. of Physics, National Chung Hsing University, Taiwan )

  • Date

    16:00-17:00, August 9, 2024 (Friday)

  • Venue

    Onsite( Wako Main Research 3F 345-347 Seminar Room/ 研究本館3階 セミナー室(345-347) C01）

  • Title

    Perturbing Liouvillian Exceptional Points in Optical Quantum Systems

  • Inquiries

    rqc_info[at]ml.riken.jp

Abstract
The open quantum system can be described either by a Lindblad master equation or by an approximate non-Hermitian Hamiltonian. These two descriptions typically result in different exceptional points (EPs): Liouvillian EPs (LEPs) and Hamiltonian EPs (HEPs), respectively. These EPs correspond to the degeneracies in the open quantum system. Recent theoretical and experimental results reveal that perturbations performed at the HEPs can enhance sensitivity in microscopic optical systems. In this talk, I will present a method we developed to perturb LEPs in optical quantum systems, which may potentially enhance the quantum coherence of these systems.




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