2002 Fiscal Year Final Research Report Summary
Interaction-Free Imaging - Development of a Quantum Camera -
| Project/Area Number |
13650046
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Nihon University |
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Principal Investigator |
INOUE Shuichiro Nihon University, College of Science and Technology, Associate Professor, 理工学部, 助教授 (30307798)
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| Project Period (FY) |
2001 – 2002
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| Keywords | Interaction-Free Measurements / Single-Photon Detection / Fabry-Perot Resonator / Quantum Imaging |
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| Research Abstract |
Using a Fabry-Perot cavity with high transmittivity, it is possible to realize high-efficiency interaction-free measurements. In the scheme, it is required to stabilize the Fabry-Perot cavity at a resonance position when the measurements are performed. We have developed the stabilized Fabry-Perot cavity using the Pound-Drever method and demonstrated interaction-free measurements. The probability of detecting the presence of an object without any photons being absorbed was 97.4%. And the probability of detecting the absence of an object was 78.6%. Hence, the efficiency of our interaction-free measurements is 88%. Scanning an object within the Fabry-Perot cavity, we can image it without 88% of incident photons being absorbed.
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