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Two-colour interferometry and switching through optomechanical dark mode excitation

Author

Listed:
  • David P. Lake

    (University of Calgary)

  • Matthew Mitchell

    (University of Calgary)

  • Barry C. Sanders

    (University of Calgary)

  • Paul E. Barclay

    (University of Calgary)

Abstract

Efficient switching and routing of photons of different wavelengths is a requirement for realizing a quantum internet. Multimode optomechanical systems can solve this technological challenge and enable studies of fundamental science involving widely separated wavelengths that are inaccessible to single-mode optomechanical systems. To this end, we demonstrate interference between two optomechanically induced transparency processes in a diamond on-chip cavity. This system allows us to directly observe the dynamics of an optomechanical dark mode that interferes photons at different wavelengths via their mutual coupling to a common mechanical resonance. This dark mode does not transfer energy to the dissipative mechanical reservoir and is predicted to enable quantum information processing applications that are insensitive to mechanical decoherence. Control of the dark mode is also utilized to demonstrate all-optical, two-colour switching and interference with light separated by over 5 THz in frequency.

Suggested Citation

  • David P. Lake & Matthew Mitchell & Barry C. Sanders & Paul E. Barclay, 2020. "Two-colour interferometry and switching through optomechanical dark mode excitation," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15625-x
    DOI: 10.1038/s41467-020-15625-x
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