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All current methods of secure communication such as public-key cryptography can eventually be broken by faster computing. At the interface of physics and computer science lies a powerful solution for secure communications: quantum cryptography. Because eavesdropping changes the physical nature of the information, users in a quantum exchange can easily detect eavesdroppers. This allows for totally secure random key distribution, a central requirement for use of the one-time pad. Since the one-time pad is theoretically proven to be undecipherable, quantum cryptography is the key to perfect secrecy.

Quantum Communications and Cryptography is the first comprehensive review of the past, present, and potential developments in this dynamic field. Leading expert contributors from around the world discuss the scientific foundations, experimental and theoretical developments, and cutting-edge technical and engineering advances in quantum communications and cryptography.

The book describes the engineering principles and practical implementations in a real-world metropolitan network as well as physical principles and experimental results of such technologies as entanglement swapping and quantum teleportation. It also offers the first detailed treatment of quantum information processing with continuous variables. Technologies include both free-space and fiber-based communications systems along with the necessary protocols and information processing approaches.

Bridging the gap between physics and engineering, Quantum Communications and Cryptography supplies a springboard for further developments and breakthroughs in this rapidly growing area.

The idea of actively using the power of quantum mechanical principles and special entangled states has fueled a revolution in the computing and communications sciences over the last decade. This book presents the historical development and state-of-the-art of quantum cryptography in a comprehensive work representing the collaboration of the most active researchers in the field. Following the leap from research into practical application, the authors cover development of basic physics principles and entangled states generation and demonstrate quantum cryptography with weak coherent states, with entangled photons, with continuous variables, in fiber communication lines, and in free space.

정보제공 :

Quantum Cryptography  
A. Ekert  
Quantum Communications with Optical Fibers  
N. Gisin, S. Iblisdir, W. Tittel, and H. Zbinden  
Advanced Quantum Communications Experiments with Entangled Photons  
M. Aspelmeyer, H. R. B¨ ohm, A. Fedrizzi, S. Gasparoni, M. Lindenthal, G. Molina-Terriza, A. Poppe, K. Resch, R. Ursin, P. Walther, A. Zeilinger, and T. Jennewein  
The DARPA Quantum Network  
C. Elliott  
Experimental Cryptography Using Continuous Polarization States  
S. Lorenz, N. Lutkenhaus, G. Leuchs, and N. Korolkova  
Quantum Logic Using Linear Optics  
J.D. Franson, B.C. Jacobs, and T.B. Pittman  
Practical Quantum Cryptography: Secrecy Capacity and Privacy Amplification  
G. Gilbert, M. Hamrick, and F.J. Thayer  
Quantum State Sharing  
T. Symul, A.M. Lance, W.P. Bowen, P.K. Lam, B.C. Sanders, and T.C. Ralph  
Free-Space Quantum Cryptography  
C. Kurtsiefer, M. Halder, H. Weinfurter, P. Zarda, P.R. Tapster, P.M. Gorman, and J.G. Rarity  
Noise-Immune Quantum Key Distribution  
Z.D. Walton, A.V. Sergienko, B.E.A. Saleh, and M.C. Teich  
Index

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