Time-Correlation Measurement using Coherent Spin-Polarized Electron Beam
| Project/Area Number |
15K13404
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Quantum beam science
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| Research Institution | Nagoya University |
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Principal Investigator |
Kuwahara Makoto 名古屋大学, 未来材料・システム研究所, 准教授 (50377933)
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| Co-Investigator(Kenkyū-buntansha) |
田中 信夫 名古屋大学, 未来材料・システム研究所, 研究員 (40126876)
石田 高史 名古屋大学, 未来材料・システム研究所, 助教 (60766525)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | スピン / 強度干渉 / 量子効果 / コインシデンス |
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| Outline of Final Research Achievements |
To observe a quantum interference effect in a transmission electron microscope (TEM), an intensity correlation was performed using a coherent spin-polarized electron waves.
We have succeeded in development of a detection system for the intensity correlation in a spin-polarized TEM. The measurement system has 48.3-ps time-resolution for coincidence detection between two electrons. Using the developed detectors, we have gotten observations of anti-bunching effect and the dependence on spin-polarization. We could measure the anti-bunching rate of 10% by using the coherent spin-polarized electron beam, and also observed enhancement effect of spin-polarization slightly. Consequently, it is revealed that the anti-bunching effect includes both space charge effect and second-order interference effect.
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Report
(3 results)
Research Products
(22 results)
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[Patent(Industrial Property Rights)] 分析装置2015
Inventor(s)
桑原真人、田中信夫、齋藤晃、宇治原徹
Industrial Property Rights Holder
桑原真人、田中信夫、齋藤晃、宇治原徹
Industrial Property Rights Type
特許
Industrial Property Number
2015-121398
Filing Date
2015-06-16
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