Experimental demonstration of a 4,294,967,296-QAM-based Y-00 quantum stream cipher template carrying 160-Gb/s 16-QAM signals.

We demonstrate a 4,294,967,296-ary quadrature amplitude modulation (QAM) based Y-00 quantum stream cipher system carrying 160-Gb/s 16-QAM signal transmitted over 320-km SSMF. The ultra-dense QAM cipher template is realized by an integrated two-segment silicon photonics I/Q modulator.

[1]  Masahide Sasaki,et al.  Quantum detection and mutual information for QAM and PSK signals , 1999, IEEE Trans. Commun..

[2]  K. Shaneman,et al.  Optical network security: technical analysis of fiber tapping mechanisms and methods for detection & prevention , 2004, IEEE MILCOM 2004. Military Communications Conference, 2004..

[3]  Osamu Hirota,et al.  Quantum stream cipher by the Yuen 2000 protocol: Design and experiment by an intensity-modulation scheme , 2005 .

[4]  Osamu Hirota,et al.  Running key mapping in a quantum stream cipher by the Yuen 2000 protocol , 2008 .

[5]  Ryo Namiki,et al.  QAM Quantum Noise Stream Cipher Transmission Over 100 km With Continuous Variable Quantum Key Distribution , 2017, IEEE Journal of Quantum Electronics.

[6]  Claude E. Shannon,et al.  Communication theory of secrecy systems , 1949, Bell Syst. Tech. J..

[7]  Osamu Hirota,et al.  Quantum quadrature amplitude modulation system and its applicability to coherent-state quantum cryptography , 2005, SPIE Optics + Photonics.

[8]  Peter J. Winzer,et al.  Y-00 quantum stream cipher overlay in a coherent 256-Gbit/s polarization multiplexed 16-QAM WDM system , 2017 .

[9]  Masataka Nakazawa,et al.  QAM quantum stream cipher using digital coherent optical transmission. , 2014, Optics express.

[10]  Ken Tanizawa,et al.  Single-channel 48-Gbit/s DP PSK Y-00 quantum stream cipher transmission over 400- and 800-km SSMF. , 2019, Optics express.

[11]  Osamu Hirota.  Practical security analysis of a quantum stream cipher by the Yuen 2000 protocol , 2007 .