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Counterfactual Quantum Cryptography
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- Authors
- Tae Gon Noh
- Issue Date
- 2009-12
- Citation
- Physical Review Letters, v.103, no.23, pp.1-4
- ISSN
- 0031-9007
- Publisher
- American Physical Society(APS)
- Language
- English
- Type
- Journal Article
- Project Code
- 09MB2400, Development of key technologies for commercial quantum cryptography communication system, Noh Tae-Gon
- Abstract
- Quantum cryptography allows one to distribute a secret key between two remote parties using the fundamental principles of quantum mechanics. The well-known established paradigm for the quantum key distribution relies on the actual transmission of signal particle through a quantum channel. In this Letter, we show that the task of a secret key distribution can be accomplished even though a particle carrying secret information is not in fact transmitted through the quantum channel. The proposed protocols can be implemented with current technologies and provide practical security advantages by eliminating the possibility that an eavesdropper can directly access the entire quantum system of each signal particle. © 2009 The American Physical Society.
- KSP Keywords
- Quantum cryptography, Quantum mechanics, Quantum system, quantum channel, quantum key distribution, secret key