Experimental demonstration of PSK Y-00 quantum noise randomized stream cipher based on cascaded multiple phase modulators

Jiaqi Zhao; Tao Pu; Jilin Zheng; Hua Zhou; Yunkun Li; Xiaohu Wang; Han Zhou

doi:10.1117/12.3007840

24 November 2023 Experimental demonstration of PSK Y-00 quantum noise randomized stream cipher based on cascaded multiple phase modulators

Jiaqi Zhao, Tao Pu, Jilin Zheng, Hua Zhou, Yunkun Li, Xiaohu Wang, Han Zhou

Author Affiliations +

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129353W (2023) https://doi.org/10.1117/12.3007840
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

A 100-km fiber transmission with 10 Gbit/s is demonstrated based on Y-00 quantum noise randomized stream cipher (QNRC) utilizing cascaded phase shift keying (PSK). The proposed of the experimental scheme is to break the limitation of high-resolution and high-speed digital-to-analog converter (DAC) in the QNRC systems. In this paper, a 10 Gbit/s encrypted signal generated by employing seven cascaded phase modulators (PM) which are driven by designed electrical voltage signals at the transmitter side. The encrypted signal is successfully decrypted by the same six cascaded PMs and digital coherent detection. The experimental results show that the power penalties between back to back (B2B) and 50 km transmission and between B2B and 100 km transmission are 1.2 dB and 2 dB, respectively. The proposed PSK-QNRC system can realize error-free transmission. Meanwhile, the bit error rate (BER) performance of the proposed scheme is well below the forward error correction (FEC) threshold. However, the DAC sampling rate of the traditional scheme is not enough to recover the complete waveform. This proposed scheme greatly improves the security of the system.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Jiaqi Zhao, Tao Pu, Jilin Zheng, Hua Zhou, Yunkun Li, Xiaohu Wang, and Han Zhou "Experimental demonstration of PSK Y-00 quantum noise randomized stream cipher based on cascaded multiple phase modulators", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129353W (24 November 2023); https://doi.org/10.1117/12.3007840

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