Abstract

The range of quantum cryptography systems using optical fibers is limited to roughly 30 km because amplifiers cannot be used. A fully operational system for quantum cryptography based on the transmission of single photons in free space under daylight conditions has been demonstrated. The feasibility of a global system for quantum cryptography based on a network of ground stations and satellites is discussed.

© 1996 Optical Society of America

Quantum cryptography using optical fibers

J. D. Franson and H. Ilves
Appl. Opt. 33(14) 2949-2954 (1994)

Spectral coherent-state quantum cryptography

Gabriella Cincotti, Leo Spiekman, Naoya Wada, and Ken-ichi Kitayama
Opt. Lett. 33(21) 2461-2463 (2008)

Advances in quantum cryptography

S. Pirandola, U. L. Andersen, L. Banchi, M. Berta, D. Bunandar, R. Colbeck, D. Englund, T. Gehring, C. Lupo, C. Ottaviani, J. L. Pereira, M. Razavi, J. Shamsul Shaari, M. Tomamichel, V. C. Usenko, G. Vallone, P. Villoresi, and P. Wallden
Adv. Opt. Photon. 12(4) 1012-1236 (2020)

Phase-modulation transmission system for quantum cryptography

Jean-Marc Mérolla, Yuri Mazurenko, Jean-Pierre Goedgebuer, Henri Porte, and William T. Rhodes
Opt. Lett. 24(2) 104-106 (1999)

Experimental free-space quantum key distribution with efficient error correction

Wei-Yue Liu, Xian-Feng Zhong, Teng Wu, Feng-Zhi Li, Biao Jin, Yu Tang, Heng-Ming Hu, Zheng-Ping Li, Liang Zhang, Wen-Qi Cai, Sheng-Kai Liao, Yuan Cao, and Cheng-Zhi Peng
Opt. Express 25(10) 10716-10723 (2017)