Exploration of topological orders in strongly correlated ultracold atomic systems and development of their fundamental theory
| Project/Area Number |
25800225
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Atomic/Molecular/Quantum electronics
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| Research Institution | The University of Tokyo |
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Principal Investigator |
FURUKAWA SHUNSUKE 東京大学, 大学院理学系研究科(理学部), 助教 (50647716)
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 物性理論 / 冷却原子 / 人工ゲージ場 / 量子ホール効果 / スピントロニクス / トポロジカル秩序 / トポロジカル絶縁体 / 光格子 / ボースアインシュタイン凝縮体 / ボースアインシュタイン凝縮 |
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| Outline of Final Research Achievements |
Topologically ordered states exhibit a number of intriguing properties such as quantized responses and quasiparticles obeying fractional statistics. In this study, we have theoretically explored novel topologically ordered states that can be realized in highly controlled ultracold atomic systems, and investigated their physical properties. In particular, we have determined detailed ground-state phase diagrams of two-component Bose gases in synthetic gauge fields, and revealed (i) the appearance of a bosonic integer quantum Hall state with unusual edge states and (ii) a nontrivial role of time-reversal symmetry in the interaction effect. We have also shown that Bose-Einstein condensate in optical lattices can host an excitation band with nontrivial topology, and that edge states originating from it can be observed by exploiting a macroscopic quantum interference.
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Report
(5 results)
Research Products
(52 results)
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[Presentation] ボソンの整数量子ホール状態2014
Author(s)
古川俊輔
Organizer
日本物理学会2014年秋季大会
Place of Presentation
中部大学、春日井市、愛知県
Year and Date
2014-09-07 – 2014-09-10
Related Report
Invited
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