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Arbitrarily Structured Photoluminescence from Individual Nanodiamonds.
Xujing Liu1, Yinhui Kan1, Shailesh Kumar1
1Center for Nano Optics, University of Southern Denmark, Odense DK-5230, Denmark.
ACS Nano
|November 17, 2025
Summary
Researchers developed a new method to control light emission from quantum emitters using holographic metasurfaces. This breakthrough enables custom-shaped photon emission for advanced quantum technologies and secure communication.
Area of Science:
- Quantum Optics
- Nanophotonics
- Materials Science
Background:
- Controlling quantum emitter (QE) radiation is vital for quantum technologies.
- Current methods struggle with at-source control of nanoscale photon sources.
Purpose of the Study:
- To develop a general approach for direct, arbitrary control of structured light emission from individual QEs.
- To enable at-source manipulation of photon emission for enhanced quantum applications.
Main Methods:
- Integration of individual nanodiamonds with nitrogen-vacancy centers with holographic metasurfaces.
- Utilizing surface plasmon mediation for light manipulation.
- Encoding vectorial wavefront information into metasurfaces.
Main Results:
- Demonstrated generation of arbitrarily structured photoluminescence from single nanodiamonds.
- Experimentally reconstructed diverse polarization-multiplexed structured emissions, including multichannel and letter shapes.
- Achieved direct, at-source control over photon emission characteristics.
Conclusions:
- The developed approach offers a general method for at-source control of nanoscale light sources.
- This technique promises advancements in scalable quantum nanophotonic devices.
- Potential applications include high-capacity quantum information processing and single-photon encryption.
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