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Related Experiment Video

Updated: Aug 27, 2025

Atomically Traceable Nanostructure Fabrication

Atomically Traceable Nanostructure Fabrication

Published on: July 17, 2015

Self-aligned patterning technique for fabricating high-performance diamond sensor arrays with nanoscale precision.

Mengqi Wang^1,2, Haoyu Sun^1,2, Xiangyu Ye^1,2

¹CAS Key Laboratory of Microscale Magnetic Resonance and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, China.

Science Advances

|September 23, 2022

Summary

We developed a nanoscale self-aligned patterning technique for creating defect centers in photonic devices. This method enables high-precision fabrication of diamond nanopillar sensors for quantum technology applications.

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Area of Science:

Nanoscale science and engineering
Quantum technology
Materials science

Background:

Precise alignment of defect centers in photonic structures is crucial for high-performance devices and quantum applications.
Current fabrication methods face challenges in achieving nanoscale precision and consistency.

Purpose of the Study:

To develop a facile, self-aligned patterning technique for nanoscale defect center creation.
To demonstrate the technique's efficacy in fabricating high-performance diamond nanopillar sensor arrays.

Main Methods:

Utilized conventional engineering technology for a self-aligned patterning technique.
Achieved doping precision of approximately 15 nm.
Fabricated diamond nanopillar sensor arrays with controlled nitrogen vacancy (NV) centers.

Main Results:

Demonstrated high consistency and near-optimal photon counts in fabricated sensor arrays.
Achieved high yield approaching theoretical limits and efficient filtering of sensors based on NV center counts.
Reported a saturated fluorescence rate of 4.34 Mcps and detection sensitivity of 1800 cps^-1/2.
Observed enhanced spin properties in isotope-enriched diamond sensors.

Conclusions:

The proposed self-aligned patterning technique offers nanoscale precision for defect center creation.
This method facilitates the development of high-yield, efficient diamond nanopillar sensors for quantum sensing.
The technique is broadly applicable to solid-state systems, enabling scalable quantum information processing.