Macroscopic quantum theory of quantum condensation in nonequilibrium composite systems
| Project/Area Number |
26287087
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Mathematical physics/Fundamental condensed matter physics
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| Research Institution | Osaka University |
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Principal Investigator |
OGAWA Tetsuo 大阪大学, 理学研究科, 教授 (50211123)
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| Co-Investigator(Kenkyū-buntansha) |
馬場 基彰 大阪大学, 基礎工学研究科, 招へい教員 (30647970)
弓削 達郎 静岡大学, 理学部, 助教 (70547380)
山口 真 東海大学, 理学部, 講師 (40733895)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2017: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Keywords | マクロ量子論 / 非平衡 / 量子熱機関 / 非平衡開放系 / 量子凝縮 / 量子コヒーレンス / レーザー / 超強結合量子系 / 共振器QED / 超強結合系 |
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| Outline of Final Research Achievements |
The purpose of this study is to construct a macroscopic quantum theory for nonequilibrium composite systems. We have obtained results within the theories for both general and concrete systems. The main results are as follows.
(1) Proposed a new picture of the appearance of coherence (polariton) on the exciton lifetime in semiconductors, (2) Discovered a superconducting circuit system in which both the equilibrium phase transition and the nonequilibrium condensation can occur, (3) Constructed a time-dependent theory for BEC-BCS-LASER crossover, (4) Discovered nonequilibrium plateaus in a coupled cavity QED array system, (5) Constructed the method of decomposing the radiation energy into work and heat in cavity QED systems, (6) Discovered a relationship between the quantum feature and computational speedup for the adiabatic quantum computation.
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Report
(5 results)
Research Products
(50 results)
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[Presentation] Exciton-polariton condensation in high excitation density regime2014
Author(s)
Tomoyuki Horikiri, Makoto Yamaguchi, Kenji Kamide, Yasuhiro Matsuo, Andreas Loeffler, Sven Hoefling, Yutaka Shikano, Tetsuo Ogawa, Alfred Forchel, Yoshihisa Yamamoto
Organizer
The 7th International Conference on Spontaneous Coherence in Excitonic Syetsms
Place of Presentation
The Prince Hakone
Year and Date
2014-04-21 – 2014-04-25
Related Report
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