| Project/Area Number |
18K18729
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| Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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| Allocation Type | Multi-year Fund |
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| Review Section |
Medium-sized Section 13:Condensed matter physics and related fields
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Ando Masaki 東京大学, 大学院理学系研究科(理学部), 准教授 (90313197)
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| Project Period (FY) |
2018-06-29 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2020: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 巨視的量子力学 / CSL理論 / レーザー干渉計 / 基礎物理実験 / 熱雑音 / 巨視系 / 量子論 |
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| Outline of Final Research Achievements |
In this research, we focus on the CSL (Continuous Spontaneous Localisation) model, which is an extended theory of quantum mechanics that can describe macroscopic objects. We have developed an optical cavities consisting of two mirrors suspended independently in a suspension in vacuum, and two laser beams are injected from both sides. Although any physicaly meaningful upper limit has not set to the CSL model, we provide knowledge for future research on the effects of noise sources such as ground vibrations and the atmosphere, the design of the suspension system and optics, and noise reduction techniques. It has also been recognised that the effect of thermal noise will eventually become an issue, and the need for measurements at low temperatures has been identified.
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| Academic Significance and Societal Importance of the Research Achievements |
現代の物理学では，相対論と量子論を結びつけることが大きな課題となっており，量子重力理論や拡張量子論の研究が進められている．本研究は，巨視的な物体も記述できるような拡張量子力学理論の1つをを実際に実験的に検証するという野心的な研究であった．感度が足りず，物理的に意味のある検証結果は得られなかったが，今後の実証に向けた知見を蓄積るするという意義があった．
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