Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range
Quantum key distribution using quantum dot single-photon emitting diodes in the red and near infrared spectral range
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DOI：
10.1088/1367-2630/14/8/083001
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发表时间：
2012-08-02
影响因子：
3.3
通讯作者：
Forchel, Alfred
中科院分区：
文献类型：
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作者：
Heindel, Tobias;Kessler, Christian A.;Forchel, Alfred
我们报告了使用在红色和近红外光谱范围内发射的高效电驱动量子点单光子源在 40 厘米距离上进行的实验室自由空间量子密钥分发 (QKD) 实验。在红外发射器件的情况下，我们在中度（高）激励下以 3.9%（3.8%）的量子误码率（QBER）和 0.35（0.49）的 g((2))(0) 值实现 27.2 kbit s(-1)(35.4 kbit s(-1)) 的筛选密钥速率。红色发光二极管以 95.0 kbit s(-1) 的速率、4.1% 的 QBER 和 0.49 的 g((2))(0) 值生成筛选密钥。这是基于电操作半导体单光子源的首次成功原理验证 QKD 实验，可以被视为迈向实用且高效的量子密码学场景的重要一步。
We report on in-lab free space quantum key distribution (QKD) experiments over 40 cm distance using highly efficient electrically driven quantum dot single-photon sources emitting in the red as well as near-infrared spectral range. In the case of infrared emitting devices, we achieve sifted key rates of 27.2 kbit s(-1)(35.4 kbit s(-1)) at a quantum bit error rate (QBER) of 3.9% (3.8%) and a g((2))(0) value of 0.35 (0.49) at moderate (high) excitation. The red emitting diodes generate sifted keys at a rate of 95.0 kbit s(-1) at a QBER of 4.1% and a g((2))(0) value of 0.49. This first successful proof of principle QKD experiment based on electrically operated semiconductor single-photon sources can be considered as a major step toward practical and efficient quantum cryptography scenarios.