Experimental Realization of Two Decoupled Directional Couplers in a Subwavelength Packing by Adiabatic Elimination

Michael Mrejen, Haim Suchowski, Taiki Hatakeyama, Yuan Wang, Xiang Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

On-chip optical data processing and photonic quantum integrated circuits require the integration of densely packed directional couplers at the nanoscale. However, the inherent evanescent coupling at this length scale severely limits the compactness of such on-chip photonic circuits. Here, inspired by the adiabatic elimination in a N-level atomic system, we report an experimental realization of a pair of directional couplers that are effectively isolated from each other despite their subwavelength packing. This approach opens the way to ultradense arrays of waveguide couplers for integrated optical and quantum logic gates.

Original languageEnglish
Pages (from-to)7383-7387
Number of pages5
JournalNano Letters
Volume15
Issue number11
DOIs
StatePublished - 11 Nov 2015
Externally publishedYes

Keywords

  • Integrated optics devices
  • atomic molecular and optical physics
  • nanophotonics
  • near-field optical microscopy
  • quantum computing
  • waveguides

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