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논문 기본 정보

자료유형
학술저널
저자정보
Shuai Huang (Southwest Institute of Technical Physics) Xiumin Xie (Southwest Institute of Technical Physics) Qiang Xu (Southwest Institute of Technical Physics) Xinhua Zhao (Southwest Institute of Technical Physics) Guangwei Deng (University of Electronic Science and Technology of China) Qiang Zhou (University of Electronic Science and Technology of China) You Wang (Southwest Institute of Technical Physics) Hai-Zhi Song (Southwest Institute of Technical Physics)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.4 No.6
발행연도
2020.12
수록면
509 - 515 (7page)

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초록· 키워드

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A practical single photon source for fiber-based quantum information processing is still lacking. As a possible 1.55-μm quantum-dot single photon source, an InGaAsP/InP-air-aperture micropillar cavity is investigated in terms of fabrication tolerance. By properly modeling the processing uncertainty in layer thickness, layer diameter, surface roughness and the cavity shape distortion, the fabrication imperfection effects on the cavity quality are simulated using a finite-difference time-domain method. It turns out that, the cavity quality is not significantly changing with the processing precision, indicating the robustness against the imperfection of the fabrication processing. Under thickness error of ±2 nm, diameter uncertainty of ±2%, surface roughness of ±2.5 nm, and sidewall inclination of 0.5°, which are all readily available in current material and device fabrication techniques, the cavity quality remains good enough to form highly efficient and coherent 1.55-μm single photon sources. It is thus implied that a quantum dot contained InGaAsP/InP-air-aperture micropillar cavity is prospectively a practical candidate for single photon sources applied in a fiber-based quantum information network.

목차

Ⅰ. INTRODUCTION
Ⅱ. IDEAL CAVITY AND METHOD
Ⅲ. UNCERTAINTY MODELS AND SIMULATION RESULTS
Ⅳ. DISCUSSION
Ⅴ. CONCLUSION
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