Broadband quantum cryptography
By: Daniel J. Rogers
Series: Synthesis lectures on quantum computing -- # 3
Publisher: Morgan & Claypool; Morgan & Claypool Publishers
Published: 2010
Place of publication: San Rafael, Calif. (1537 Fourth Street, San Rafael, CA 94901 USA)
Language: eng
Format: [electronic resource] /
Number of pages: 83
ISBN-13: 9781608450602; 9781608450596
Subjects: Quantum theory; Data encryption (Computer science); Cryptography
Other titles: Synthesis digital library of engineering and computer science.
Description: Quantum cryptography is a rapidly developing field that draws from a number of disciplines, from quantum optics to information theory to electrical engineering. By combining some fundamental quantum mechanical principles of single photons with various aspects of information theory, quantum cryptography represents a fundamental shift in the basis for security from numerical complexity to the fundamental physical nature of the communications channel. As such, it promises the holy grail of data security: theoretically unbreakable encryption. Of course, implementing quantum cryptography in real broadband communications systems poses some unique challenges, including generating single photons, distilling random keys from the quantum key distribution process, and maintaining security at both the theoretical and practical level.Overall, quantum cryptography has a place in the history of secret keeping as a novel and potentially useful paradigm shift in the approach to broadband data encryption.
Notes: Part of: Synthesis digital library of engineering and computer science.

Title from PDF t.p. (viewed on April 7, 2010).

Series from website.

Includes bibliographical references (p. 77-81).

Abstract freely available; full-text restricted to subscribers or individual document purchasers.

Also available in print.

Mode of access: World Wide Web.

System requirements: Adobe Acrobat Reader.
Table of contents: title: 1. Introduction; title: A brief history of keeping secrets; title: Why quantum cryptography; title: 2. Elements of classical cryptography; title: Prime numbers and public-key encryption; title: The RSA cryptosystem; title: Is RSA secure; title: Factoring in classical and quantum computation; title: Other public key cryptosystems; title: Information theory and symmetric key cryptosystems; title: Defining "perfect" security; title: The Vernam cipher; title: Pseudo-random number generators; title: Other symmetric key cryptosystems; title: The future of modern cryptography; title: 3. The quantum mechanics of photons; title: The polarized electromagnetic plane wave; title: The quantum mechanical polarization state; title: Quantum entanglement and the Bell inequality; title: 4. Fundamentals of quantum key distribution; title: Communicating with single photons; title: Quantum random number generation; title: Conjugate coding; title: The BB84 protocol; title: The B92 protocol; title: Communicating with entangled photons; title: Random bits and information leakage; title: The E91 protocol and the Bell test; title: Coding on other quantum states; title: Phase encoding; title: Frequency encoding; title: Caveats on the security claim; title: 5. Information theory and key reconciliation; title: Information and entropy; title: Universal hashing functions; title: Privacy amplification via the public channel; title: The CASCADE algorithm; title: Conclusion, the information theory iceberg; title: 6. Components for broadband QKD; title: Semi-classical sources; title: The photon number splitting attack; title: The decoy state protocol; title: Nonlinear and quantum optical sources; title: Heralded single photon sources; title: Deterministic single photon sources; title: Bulk optical entanglement sources; title: Fiber-based sources of entanglement; title: Photonic sources of entanglement; title: Quantum dots, single ions, and other novelties; title: Single photon detectors; title: Photomultiplier tubes; title: Avalanche photodiodes; title: InGaAs and up-conversion detectors; title: Superconducting single-photon detectors; title: Conclusion; title: 7. A survey of QKD implementations; title: Free space QKD systems; title: Broadband links; title: Long distance communications; title: Truly entangled links; title: Fiber optic QKD systems; title: Compensated polarization encoding; title: Phase encoding; title: Single-sideband frequency coding; title: Commercially available systems; title: Next generation QKD; title: 8. Conclusion, QKD in the marketplace; title: Perceptions and misconceptions; title: Global QKD satellite networks; title: Short-haul fiber networks; title: The real need for QKD; title: The future of quantum engineering; title: Bibliography; title: Author's biography.