2022 Fiscal Year Annual Research Report
Optically interfacing a single atom tweezer array for quantum photonics
| Project/Area Number |
21H01011
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | Quantum Optics / Nanophotonics / Optical Nanofiber / Cavity QED / Quantum Information |
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| Outline of Annual Research Achievements |
In FY2022, we have built the experimental apparatus for trapping single atoms in a single optical tweezer. We have developed software controlled multitone RF-signal generation for creating an array of tweezers.
We have established reproducible fabrication of 300 nm diameter nanofibers with >98% transmission. We have built the experimental apparatus for fabrication of nanofiber cavities using femtosecond laser ablation.
In a different approach, we have also investigated and demonstrated strong plasmonic enhancement of spontaneous emission on nanofiber leading to bright and polarized single photon emission into fiber guided modes.
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| Current Status of Research Progress |
Current Status of Research Progress
3: Progress in research has been slightly delayed.
Reason
We have to re-establish various apparatus and laser setups required for the experiments.
We have made reasonable progress and achievements in various directions, but it is not enough for the present project. We are still far from the final goal.
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| Strategy for Future Research Activity |
The implementation plans for FY2023 are the followings.
- Development of high-power laser system for trapping atoms in multiple optical tweezers.
- Development of optical setup for creating an array of tweezers using acousto-optic deflector (AOD) driven by multitone RF-signal and detection of array of single atoms using EMCCD camera.
- Trapping and imaging array of single atoms on nanofiber.
- Experiments on emission properties of an array of single atoms on nanofiber.
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