2023 Fiscal Year Final Research Report
Detection Scheme and Optimal Design for Quantum Illumination Using Quasi-Bell State
| Project/Area Number |
22K20437
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
0302:Electrical and electronic engineering and related fields
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| Research Institution | Kanagawa University |
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Principal Investigator |
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| Project Period (FY) |
2022-08-31 – 2024-03-31
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| Keywords | 情報通信工学 / 量子情報理論 / エンタングルメント / 量子計測 / 擬似ベル状態 / 量子イルミネーション / 測定器設計 / 誤り率特性 |
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| Outline of Final Research Achievements |
Quantum illumination is an entanglement-based protocol that is able to detect the existence of a target. In this study, we considered and discussed a physical implementation of a measurement scheme for the quasi-Bell state-based quantum illumination in an attenuation environment using a beam splitter and photon counters. As a result, under almost all conditions, the scheme offers a significant advantage over a scheme using the two-mode squeezed vacuum state, which allows optimum quantum detection. In addition, it was clarified that similar performance can be obtained by replacing the photon counters with on-off detectors.
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| Free Research Field |
工学
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| Academic Significance and Societal Importance of the Research Achievements |
エンタングルド状態という量子力学的な相関状態を用いて，物体の存在，状態，形状等を高感度あるいは高精度に計測する技術が量子計測技術である．本研究の成果により，擬似ベル状態などの非ガウス状態を用いた量子計測プロトコルでは，より経済的な素子で測定器を構成する可能性があること，2モードスクィズド真空状態などのガウス状態を用いたプロトコルより優れた性能を出しうることを示唆しており，非ガウス状態の生成，応用プロトコルの性能解析や技術開発などに関する研究の加速を促すことが期待される．
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