Abstract
The various eavesdropping strategies on a quantum cryptographic channel as discussed by Gisin et.al. can be reproduced by unsharp spin (represented by positive operator valued measure) measurement of spin-1/2 particle. An upper bound for unsharp parameter is obtained so that it still gives rise to violation of Bell’s inequality for the two particle transmission channel.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
Similar content being viewed by others
References
N. Gisin, B, Huttner, Phys. Lett. A. 228 (1997)13.
P. Busch, Found. Phys. 17 (1987)905.
G. Kar, Int. J. Theot. Phys. 35 (1996)1279.
K. Kraus, States, effects and operations, Springer-Verlag, 1983.
P. Busch, Phys. Rev. D. 33 (1986)2253.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1999 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Roy, S., Kar, G. (1999). Quantum Cryptography, Eavesdropping, and Unsharp Spin Measurement. In: Williams, C.P. (eds) Quantum Computing and Quantum Communications. QCQC 1998. Lecture Notes in Computer Science, vol 1509. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-49208-9_18
Download citation
DOI: https://doi.org/10.1007/3-540-49208-9_18
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-65514-5
Online ISBN: 978-3-540-49208-5
eBook Packages: Springer Book Archive