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Sample Preparation and Transfer Protocol for In-Vacuum Long-Wavelength Crystallography on Beamline I23 at Diamond Light Source
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Bright nanowire single photon source based on SiV centers in diamond
Optics Express
|January 13, 2018
Summary
Researchers developed a method to deterministically implant silicon ions into diamond nanowires, creating efficient single photon sources. This boosts light coupling for quantum technologies operating at room temperature.
Area of Science:
- Quantum optics and photonics
- Materials science for quantum applications
- Solid-state physics
Background:
- Robust room-temperature single photon sources are crucial for quantum technologies.
- Diamond color centers, like the silicon-vacancy (SiV-) center, show promise but suffer from low photon out-coupling due to refractive index mismatch and random defect localization.
- Existing methods lack deterministic control over defect placement, hindering device integration.
Purpose of the Study:
- To overcome the limitations of low photon out-coupling and random defect localization in diamond-based single photon sources.
- To demonstrate a scalable method for creating efficient, room-temperature single photon emitters for integrated quantum devices.
- To enhance light extraction efficiency by integrating single photon emitters with nanostructures.
Main Methods:
- Deterministic implantation of silicon ions into pre-fabricated diamond nanowires.
- High-efficiency conversion of implanted Si ions into single silicon-vacancy (SiV-) color centers.
- Fabrication of diamond nanostructures to guide and enhance light emission from SiV- centers.
- Characterization of SiV- centers co-localized with nanostructures to measure photon out-coupling efficiency.
Main Results:
- Achieved deterministic implantation of Si ions with high conversion efficiency to single SiV- centers.
- Demonstrated co-localization of single SiV- centers with fabricated nanowires.
- Observed a ten-fold increase in light coupling efficiency for SiV- centers integrated with nanostructures compared to those in bulk diamond.
- Validated a scalable method for creating enhanced single photon sources.
Conclusions:
- Deterministic implantation into nanostructures significantly enhances photon out-coupling for SiV- centers in diamond.
- This approach overcomes key limitations for practical quantum technology implementation.
- The scalable SiV- creation method paves the way for integrated photonics and advanced quantum science devices.
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