2009 Fiscal Year Final Research Report
Development of telecom-band single-photon detector operated at a gigahertz repetition frequency and application it to a quantum key distribution.
| Project/Area Number |
20760038
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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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 |
NAMEKATA Naoto Nihon University, 理工学部, 助手 (20453912)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 量子光学 |
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| Research Abstract |
We demonstrated that InGaAs/InP avalanche photodiodes can be operated at 2 GHz gate repetition frequency. Furthermore, the high-speed single photon detector has a detection efficiency of 10% at a telecommunication wavelength (1550 nm) with a dark count probability per gate of 6 x 10^<-7>. The developed single-photon detector is suitable for the application to a practical quantum key distribution system.
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