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Transition from exceptional points to observable nonlinear bifurcation points in anti-PT symmetric coupled cavity systems

Takahiro Uemura1,2, Kenta Takata2,3, and Masaya Notomi1,2,3,*

  • 1Department of Physics, Institute of Science Tokyo, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan
  • 2NTT Basic Research Laboratories, NTT Inc., 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan
  • 3Nanophotonics Center, NTT Inc., 3-1 Morinosato-Wakamiya, Atsugi-shi, Kanagawa 243-0198, Japan

  • *Contact author: notomi@phys.sci.isct.ac.jp

Higher-order exceptional points unveiled by nilpotence and mathematical induction

Kenta Takata, Adam Mock, Masaya Notomi, and Akihiko Shinya

Commun Phys 9 274 (2026)

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