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

Journal Article · · ACS Photonics
 [1];  [2];  [2];  [2];  [2];  [2]
  1. Purdue Univ., West Lafayette, IN (United States). School of Electrical and Computer Engineering. Birck Nanotechnology Center. Purdue Quantum Science and Engineering Inst.; OSTI
  2. Purdue Univ., West Lafayette, IN (United States). School of Electrical and Computer Engineering. Birck Nanotechnology Center. Purdue Quantum Science and Engineering Inst.
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.
Research Organization:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0017717
OSTI ID:
1803142
Journal Information:
ACS Photonics, Journal Name: ACS Photonics Journal Issue: 8 Vol. 7; ISSN 2330-4022
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

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