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arXiv 1001.0934quant-phphysics.ins-det
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光子计数型InGaAs雪崩光电二极管的千兆赫工作

Multi-gigahertz operation of photon counting InGaAs avalanche photodiodes

Z. L. Yuan, A. W. Sharpe, J. F. Dynes, A. R. Dixon, A. J. Shields

摘要:

我们报告了一个2 GHz的操作InGaAs雪崩光电二极管在电信波长的有效的单光子探测。采用自差分电路,在频率和臂平衡中加入调谐器,现在可以检测到非常微弱的雪崩,从而抑制后脉冲。当光子探测效率为23.5%和11.8%时,后脉冲概率分别为4.84%和1.42%。该装置将进一步提高光纤波长量子密钥分发的安全比特率。

英文摘要:

We report a 2 GHz operation of InGaAs avalanche photodiodes for efficient single photon detection at telecom wavelengths. Employing a self-differencing circuit that incorporates tuneability in both frequency and arm balancing, extremely weak avalanches can now be sensed so as to suppress afterpulsing. The afterpulse probability is characterized as 4.84% and 1.42% for a photon detection efficiency of 23.5% and 11.8%, respectively. The device will further increase the secure bit rate for fiber wavelength quantum key distribution.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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