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Tunable Single-Photon Emission with Wafer-Scale Plasmonic Array.
Chun-An Chen1, Po-Han Chen1, Yu-Xiang Zheng1
1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
Nano Letters
|February 15, 2024
Summary
We developed a tunable quantum emitter array using hexagonal boron nitride (h-BN) integrated with plasmonics. This scalable platform significantly enhances single-photon emission (SPE) intensity at room temperature for quantum applications.
Area of Science:
- Quantum optics
- Nanophotonics
- Materials science
Background:
- Single-photon emission (SPE) is crucial for quantum technologies.
- Hexagonal boron nitride (h-BN) shows promise as a room-temperature SPE material.
- Scalability and tunability of SPE are key challenges.
Purpose of the Study:
- To demonstrate a tunable quantum emitter array in h-BN at room temperature.
- To enhance SPE intensity and control using plasmonic integration.
- To develop a scalable platform for quantum photonics.
Main Methods:
- Integration of hexagonal boron nitride (h-BN) with a wafer-scale plasmonic array.
- Development of transient voltage electrophoretic deposition (EPD) for nanometal filling.
- Fabrication of tunable quantum emitter arrays.
Main Results:
- Achieved a tunable quantum emitter array in h-BN at room temperature.
- Observed an enhancement of ~500% in SPE intensity.
- Attained a radiative quantum efficiency up to 20% and a saturated count rate > 4.5 × 10^6 counts/s.
Conclusions:
- The integrated h-BN-plasmonic array is a promising platform for scalable and controllable single-photon emission.
- This approach enables enhanced room-temperature quantum photonics.
- The developed EPD method ensures efficient nanometal filling for tunable emitter performance.
