Dissipative structures in polariton superfluids
| Project/Area Number |
26400414
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Electro-Communications |
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Principal Investigator |
Saito Hiroki 電気通信大学, 大学院情報理工学研究科, 教授 (60334497)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | Superfluid / Polariton / Quantized vortex / Bose-Einstein condensate / ボース・アインシュタイン凝縮 / 励起子ポラリトン / 自励振動 / 超流動 / 量子渦 / 散逸構造 |
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| Outline of Final Research Achievements |
The main purpose of the present study is to find dissipative phenomena in exciton-polariton superfluids, such as dissipative structures. In a locally pumped exciton-polariton superfluids, we found that the rotation symmetry is spontaneously broken and a localized structure is formed. Interestingly, this state rotates around the center of the system, which is regarded as the self-induced oscillation. If such two objects are produced by two external lasers with an appropriate distance, the frequency and phase of the two rotating polartons are synchronized. Such self-rotation and synchronization are peculiar to open systems.
In addition, in the present study, a variety of phenomena including vortex structures have been discovered in Bose-Einstein condensates of ultracold atomic gases.
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Report
(4 results)
Research Products
(49 results)
