Quantum stream cipher by Yuen 2000 protocol: Design and experiment by intensity modulation scheme
arXiv:quant-ph/0507043 · doi:10.1103/PhysRevA.72.022335
Abstract
This paper shall investigate Yuen protocol, so called Y-00, which can realize a randomized stream cipher with high bit rate(Gbps) for long distance(several hundreds km). The randomized stream cipher with randomization by quantum noise based on Y-00 is called quantum stream cipher in this paper, and it may have security against known plaintext attacks which has no analog with any conventional symmetric key ciphers. We present a simple cryptanalysis based on an attacker's heterodyne measurement and the quantum unambiguous measurement to make clear the strength of Y-00 in real communication. In addition, we give a design for the implementation of an intensity modulation scheme and report the experimental demonstration of 1 Gbps quantum stream cipher through 20 km long transmission line.
This paper will appear in Phys. Rev. A
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- Fundamental Quantitative Security In Quantum Key Distribution
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- Quantum key distribution protocol with pseudorandom bases
- On the Security of Y-00 under Fast Correlation and Other Attacks on the Key
- Guessing probability under unlimited known-plaintext attack on secret keys for Y00 quantum stream cipher by quantum multiple hypotheses testing
- Decoherence Effects in a Three-Level System under Gaussian Process
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- Analysis of Y00 Protocol under Quantum Generalization of a Fast Correlation Attack: Toward Information-Theoretic Security
- On the security of AlphaEta: Response to `Some attacks on quantum-based cryptographic protocols'