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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Buttler, W.T. Hughes, R.J. Kwiat, P.G. Lamoreaux, S.K. Luther, G.G. Morgan, G.L. Nordholt, J.E. Peterson, C.G. Simmons, C.M. White, A.G. |
| Copyright Year | 1998 |
| Description | Author affiliation: Los Alamos Nat. Lab., NM, USA (Buttler, W.T.) |
| Abstract | We demonstrated quantum cryptography, or quantum key distribution (QKD), in free space over an outdoor optical path of /spl sim/950 m under nighttime conditions. The success of free space QKD against a high background depends on the transmission and detection of single photons through an optically thick and turbulent medium. It has been shown that a combination of sub-nanosecond timing, narrow filters, spatial filtering, and adaptive optics can render the difficult detection problem tractable. Further, the nonbirefringent nature of the atmosphere at optical wavelengths allows the transmission of the single photon polarization states used in the free-space QKD protocol. |
| Starting Page | 89 |
| Ending Page | 90 |
| File Size | 335140 |
| Page Count | 2 |
| File Format | |
| ISBN | 1557525412 |
| DOI | 10.1109/IQEC.1998.680185 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1998-05-08 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Optical Soc. Of America |
| Subject Keyword | Cryptography Optical attenuators Optical filters Optical transmitters Quantum computing Optical receivers Quantum mechanics Physics Optical fibers Telecommunications |
| Content Type | Text |
| Resource Type | Article |
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