Practical free-space Quantum key distribution over 1 km

W. T. Buttler, R. J. Hughes, P. G. Kwiat, S. K. Lamoreaux, G. G. Luther, G. L. Morgan, J. E. Nordholt, C. G. Peterson, C. M. Simmons

Research output: Contribution to journalArticlepeer-review


A working free-space quantum key distribution system has been developed and tested over an outdoor optical path of ∼1km at Los Alamos National Laboratory under nighttime conditions. Results show that free-space quantum key distribution can provide secure real-time key distribution between parties who have a need to communicate secretly. Finally, we examine the feasibility of surface to satellite quantum key distribution.

Original languageEnglish (US)
Pages (from-to)3283-3286
Number of pages4
JournalPhysical review letters
Issue number15
StatePublished - 1998
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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