DocumentCode
2887739
Title
Practical free space quantum cryptography
Author
Schmitt-Manderbach, T. ; Weier, H. ; Regner, N. ; Kurtsiefer, Ch. ; Weinfurter, H.
Author_Institution
Sektion Physik, Ludwig-Maximilians-Univ., Munchen, Germany
fYear
2005
fDate
12-17 June 2005
Firstpage
305
Abstract
A successful free space quantum cryptography experiment over a distance of 500 m using the BB84 protocol is reported. The obtained bit error rates of this experiment using faint coherent pulses with an average photon number ranging from 0.1 to 1.0 was measured to be below 3 percent for experiments carried out during night, leading to average raw key rates (before error correction and privacy amplification) of 50 kBits per second.
Keywords
error statistics; optical communication; optical links; quantum cryptography; quantum optics; 50 kbit/s; 500 m; BB84 protocol; bit error rates; error correction; faint coherent pulses; free space quantum cryptography; privacy amplification; raw key rates; Clocks; Cryptography; Optical pulse generation; Optical receivers; Optical refraction; Optical sensors; Optical transmitters; Telescopes; Timing; Urban areas;
fLanguage
English
Publisher
ieee
Conference_Titel
Quantum Electronics Conference, 2005. EQEC '05. European
Print_ISBN
0-7803-8973-5
Type
conf
DOI
10.1109/EQEC.2005.1567471
Filename
1567471
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