On-Chip Single-Layer Integration of Diamond Spins with Microwave and Plasmonic Channels

Mikhail Y. Shalaginov, Simeon I. Bogdanov, Alexei S. Lagutchev, Alexander V. Kildishev, Alexandra Boltasseva, Vladimir M. Shalaev

Research output: Contribution to journalArticlepeer-review

Abstract

On-chip scalable integration represents a major challenge for practical quantum devices. One particular challenge is to implement on-chip optical readout of spins in diamond. This readout requires simultaneous application of optical and microwave fields along with the efficient collection of fluorescence. These requirements are typically met using bulk optical components and dedicated microwave lines. Here, we experimentally demonstrate an on-chip integrated interface for diamond nitrogen vacancy (NV) spin-state preparation and readout, implemented in a planar single layer with only one patterning step. A nanodiamond with NV centers is positioned inside a v-groove waveguide milled in a thick gold film. The gold film carries the microwave control signal, while the v-groove acts as a fluorescence collector and, potentially, as an integrated pump filter. Hence, the device dimensions and fabrication complexity are substantially reduced. Our approach fosters further development of ultracompact nanoscale quantum sensors and quantum information processing devices on a monolithic platform.

Original languageEnglish (US)
Pages (from-to)2018-2026
Number of pages9
JournalACS Photonics
Volume7
Issue number8
DOIs
StatePublished - Aug 19 2020
Externally publishedYes

Keywords

  • nanodiamond
  • nitrogen-vacancy centers
  • optically detected magnetic resonance
  • plasmonic waveguide
  • quantum optical-microwave interface
  • spin readout

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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