Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 23, Issue 13, Pages 887-889Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2011.2141982
Keywords
Avalanche photodiode (APD); photon detector
Funding
- National Natural Science Fund of China [10904039, 10990101, 60807027, 91021014]
- National High-tech RD Program [2009AA01A349]
- National Education Ministry of China [109069]
- Shanghai Science and Technology Commission [10QA1402100]
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We demonstrate an efficient way to improve the timing jitter of sine-wave gated InGaAs/InP avalanche photodiode (APD) by combining sinusoidally balanced differencing and low-pass filtering techniques to minimize detrimental waveform distortion of the avalanche signal, and realize a 1-GHz gated InGaAs/InP single-photon detector with the timing jitter as low as 60 ps. The detection efficiency could reach 10.4% at 1550 nm with the maximum count rate similar to 100 MHz, afterpulse probability similar to 3.0%, and dark count rate similar to 6.1 x 10(-6) per gate. Such low timing jitter single-photon detectors offer facility for quantum key distribution at gigahertz clock rate.
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