Quantum cryptography
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Phys. Rev. X 2, 041010 (2012): Coexistence of High-Bit-Rate Quantum Key Distribution and Data on Optical Fiber

Phys. Rev. X 2, 041010 (2012): Coexistence of High-Bit-Rate Quantum Key Distribution and Data on Optical Fiber | Quantum cryptography | Scoop.it
Quantum key distribution (QKD) uniquely allows the distribution of cryptographic keys with security verified by quantum mechanical limits. Both protocol execution and subsequent applications require the assistance of classical data communication channels. While using separate fibers is one option, it is economically more viable if data and quantum signals are simultaneously transmitted through a single fiber. However, noise-photon contamination arising from the intense data signal has severely restricted both the QKD distances and secure key rates. Here, we exploit a novel temporal-filtering effect for noise-photon rejection. This allows high-bit-rate QKD over fibers up to 90 km in length and populated with error-free bidirectional Gb/s data communications. With a high-bit rate and range sufficient for important information infrastructures, such as smart cities and 10-Gbit Ethernet, QKD is a significant step closer toward wide-scale deployment in fiber networks.
Silvestre Abruzzo's insight:

Very interesting also because they present secret key rates with finite size corrections.

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Quantum cryptography is secure... except when it's not

Quantum cryptography is secure... except when it's not | Quantum cryptography | Scoop.it
Researchers close one security hole in quantum key distribution, but seem to …
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CQT Highlight — Quantum cryptography can resist malicious manipulation

CQT Highlight — Quantum cryptography can resist malicious manipulation | Quantum cryptography | Scoop.it
Researchers including Artur Ekert, co-inventor of quantum cryptography, discover new power in the secret messaging technique.
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Quantum cryptography: yesterday, today, and tomorrow

Quantum cryptography: yesterday, today, and tomorrow | Quantum cryptography | Scoop.it
Does it have a future? Classic cryptology isn't budging, but all depends on QKD.
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Physicists go totally random | Matter & Energy | Science News

Physicists go totally random | Matter & Energy | Science News | Quantum cryptography | Scoop.it
Calculations suggest way to boost the independence of information flow.
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