| 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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| 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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