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.
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