Marcikic, I.Lamas-Linares, A.Kurtsiefer, C.TEMASEK LABORATORIESPHYSICS2014-12-122014-12-122006Marcikic, I., Lamas-Linares, A., Kurtsiefer, C. (2006). Free-space quantum key distribution with entangled photons. Applied Physics Letters 89 (10) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.234877500036951https://scholarbank.nus.edu.sg/handle/10635/115739The authors report on a complete experimental implementation of a quantum key distribution protocol through a free-space link using polarization-entangled photon pairs from a compact parametric downconversion source. Over 10 h of uninterrupted communication between sites 1.5 km apart, they observe average key generation rates of 630/s after error correction and privacy amplification. Their scheme requires no specific hardware channel for synchronization apart from a classical wireless link, and no explicit random number generator. © 2006 American Institute of Physics.Article000240384000022