Towards practical quantum cryptography

Applied Physics B: Lasers and Optics

Volumn 69, Issue 5, 1999, Pages 389-393

  Chiangga, S ^a,b   Zarda, P ^a,d   Jennewein, T ^c   Weinfurter, H ^d,e  

^a UNIVERSITY OF INNSBRUCK   (Austria)

^b KASETSART UNIVERSITY   (Thailand)

^c INSTITUT FÜR EXPERIMENTALPHYSIK   (Austria)

^d UNIVERSITY OF MUNICH   (Germany)

^e MAX PLANCK INSTITUT FÜR QUANTENOPTIK   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

CRYPTOGRAPHY; QUANTUM THEORY;

QUANTUM CRYPTOGRAPHY;

QUANTUM OPTICS;

EID: 0033357263     PISSN: 09462171     EISSN: None     Source Type: Journal    
DOI: 10.1007/s003400050824     Document Type: Article

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14. The components of the final tests presented here are 850-nm, 5-mW, single mode laser diodes from Sharp, polarizing non-polarizing beam splitters from Melles-Griot, half-wave and quarzt plates from Casix, and Si-SPADs from EG&G
15. The count rates from different detectors vary due to slight differences in the quantum efficiency. Because of the losses of the polarizing filter used in Fig. 4a and new alignment the rates are even slightly higher in Fig. 4b
16. The design most likely has to be changed when considering quantum cryptography in a network. The high price of the Si-SPADs makes it necessary to use schemes where many Alices exchange keys with a single (trusted) Bob. Then the synchronization and polarization alignment has to be performed in the sender modules
17. H. Zbinden: In Introduction to Quantum Computation, ed. by H.-K. Lo, S. Popescu, T.P. Spiller (Clarendon Press, Oxford 1998)