| Budget Amount *help |
¥18,070,000 (Direct Cost: ¥13,900,000、Indirect Cost: ¥4,170,000)
Fiscal Year 2019: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2017: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
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| Outline of Final Research Achievements |
In this study, first, we performed a theoretical analysis of our proposal. Our theoretical results show that our scheme surpasses the conventional quantum scheme under photon loss at the detection stage. We also propose a hybrid approach to cope with the case where the photon pair annihilation process is imperfect, and we show that the hybrid scheme always surpasses the conventional quantum scheme.
A quantum absorption measurement system was constructed to demonstrate our proposal. We found that introducing a small loss in one of the optical paths in the nonlinear interferometer increases the number of detected photon counts at the output. Then, we confirmed that the signal to noise ratio in the imaging process can be estimated from the change in the number of detected photon counts.
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