Radiative topological biphoton states in modulated qubit arrays

24 Feb 2020 Ke Yongguan Zhong Janet Poshakinskiy Alexander V. Kivshar Yuri S. Poddubny Alexander N. Lee Chaohong

We study topological properties of bound pairs of photons in spatially-modulated qubit arrays (arrays of two-level atoms) coupled to a waveguide. While bound pairs behave like Bloch waves, they are topologically nontrivial in the parameter space formed by the center-of-mass momentum and the modulation phase, where the latter plays the role of a synthetic dimension... (read more)

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Categories


  • QUANTUM PHYSICS
  • ATOMIC PHYSICS
  • OPTICS