Generation of new paradigm by realization of ultrahigh performance superconducting single photon detecctor

2015 Fiscal Year Final Research Report

• Project/Area Number: 25286077
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Optical engineering, Photon science
• Research Institution: National Institute of Information and Communications Technology
• Principal Investigator: Miki Shigehito 国立研究開発法人情報通信研究機構, 未来ICT研究所ナノICT研究室, 主任研究員 (30398424)
• Co-Investigator(Kenkyū-buntansha): TERAI Hirotaka 国立研究開発法人情報通信研究機構, 未来ICT研究所ナノICT研究室, 研究マネージャー (10359094) ; YAMAMOTO Takashi 大阪大学, 基礎工学研究科, 准教授 (10403130)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 光子検出器 / 量子光学 / 超伝導デバイス

Outline of Final Research Achievements

In this work, we realized the improvement of performance in superconducting single photon detector (SSPD) such as higher system detection efficiency than 70% at telecommunication wavelength, lower dark count rate than 100 counts/sec, timing jitter of 70ps, and 10 times higher speed operation than before the beggining of this work. We also realized new schemes in quantum information technology by applying SSPD such as quantum interface with 91% fidelity and observation of two photon interferences from independent photon sources.

Free Research Field

超伝導エレクトロニクス