Optically interfacing a single atom tweezer array for quantum photonics
| Project/Area Number |
21H01011
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Review Section |
Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
Nayak KaliPrasanna (Nayak K.Prasanna) 電気通信大学, 大学院情報理工学研究科, 准教授 (70551042)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Granted (Fiscal Year 2023)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Fiscal Year 2022: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2021: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
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| Keywords | Quantum Optics / Nanophotonics / Cavity QED / Quantum Information / Optical Nanofiber |
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| Outline of Research at the Start |
The purpose of this research is to optically interface an array of single atoms by trapping them in the vicinity of a nanofiber (subwavelength diameter waist of a tapered optical fiber). We will implement such a platform for controlling the generation and propagation of fiber guided single photons.
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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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Report
(2 results)
Research Products
(9 results)
