Engineering reconfigurable laser-written circuits for practical quantum metrology

Zachary Chaboyer*, Alex Stokes, M. J. Steel, Michael J. Withford

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)
12 Downloads (Pure)


We fabricate a series of reconfigurable waveguide interferometers using laser machining techniques and charac- terize them classically. The 3D nature of the ultrafast laser writing technique allows for the fabrication of unique multi-arm interferometers not possible in planar platforms. We demonstrate selectivity between multiple phase shifters in a single interferometer by patterning the chip surface using picosecond laser ablation in a separate step. Microfluidic elements for making practical measurements on-chip are incorporated by machining channels within the substrate to interact with waveguide modes. Our results provide a path toward practical implementation of quantum metrology protocols requiring multiple interferometer arms and tunable phases.

Original languageEnglish
Title of host publicationIntegrated Optics: Devices, Materials, and Technologies XX
EditorsJean-Emmanuel Broquin, Gualtiero Nunzi Conti
Place of PublicationBellingham, Washington
Number of pages10
ISBN (Electronic)9781628419856
Publication statusPublished - 2016
EventIntegrated Optics: Devices, Materials, and Technologies XX - San Francisco, United States
Duration: 15 Feb 201617 Feb 2016

Publication series

NameProceedings of SPIE
ISSN (Print)0277-786X


OtherIntegrated Optics: Devices, Materials, and Technologies XX
Country/TerritoryUnited States
CitySan Francisco


  • Integrated optics
  • Quantum technology


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