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arXiv 2004.06552quant-ph
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基于多模相干态的量子随机数generator

Vacuum-based quantum random number generator using multi-mode coherent states

E. O. Samsonov, B. E. Pervushin, A. E. Ivanova, A. A. Santev, V. I. Egorov, S. M. Kynev, A. V. Gleim

摘要:

我们提出了一种基于真空涨落测量的光量子随机数发生器,它利用强光载波的电光相位调制产生的多模相干态。在这种方法中,弱相干多模态(或真空态)独立地在每个边模上与作为本机振荡器的载波发生干涉。通过控制电光相位调制器的调制指数,该装置可以有效地补偿平衡探测器两臂之间的偏差。我们进行了原理验证实验,并演示了随机数生成的可能性,实时随机性提取的速率为400 Mbit/s。

英文摘要:

We present an optical quantum random number generator based on vacuum fluctuation measurements that uses multi-mode coherent states generated by electro-optical phase modulation of an intense optical carrier. In this approach the weak coherent multi-mode state (or a vacuum state) interferes with the carrier, which acts as a local oscillator, on each side mode independently. The proposed setup can effectively compensate for deviations between the two arms of a balanced detector by controlling the modulation index of the electro-optical phase modulator. We perform a proof-of-principle experiment and demonstrate random number generation with a possibility of real-time randomness extraction at the rate of 400 Mbit/s.

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