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posted by Fnord666 on Wednesday November 29 2017, @06:35AM   Printer-friendly
from the quantum-digits-to-the-rescue dept.

Researchers have increased the speed of quantum key distribution from hundreds of kilobits to megabits per second:

Researchers have packed extra information onto single photons to speed up quantum key distribution (QKD) systems. QKD uses a characteristic of quantum mechanics to protect keys used to encrypt data using classical crypto schemes: if Eve tries to snoop on the key Alice is sending Bob, the quantum state/s a photon carries are destroyed. Alice and Bob know there's an eavesdropper, and the key Eve eavesdropped is useless.

However, compared to conventional telecommunications systems, QKD is slow: most systems based on photon-by-photon transmission of crypto keys run at speeds of hundreds of kilobits per second.

Research from Duke University's Nurul Taimur Islam, with collaborators from Ohio State University, Oak Ridge National Laboratory, and the National University of Singapore, achieved megabit key distribution rates using off-the-shelf components, meaning existing photonic QKD systems could be adapted to use it their work. In a paper based on research funded by the United States Navy and Defense Advanced Research Projects Agency (DARPA), published in Science Advances [open, DOI: 10.1126/sciadv.1701491] [DX] and available as pre-press at arXiv, the researchers explained that to get faster key distribution rates, they worked to overcome the limits on photon detectors' speed.

Also at Engadget.

Related: Secure Computing for Everybody
Reflective Satellites may be the Future of High-end Encryption
Quantum Video Chat Links Scientists on Two Different Continents


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  • (Score: 2) by c0lo on Wednesday November 29 2017, @08:35AM

    by c0lo (156) Subscriber Badge on Wednesday November 29 2017, @08:35AM (#602880) Journal

    Except that the 20 freescale semi people disappeared were 12 Malaysians and 8 Chinese [theregister.co.uk], heading towards Beijing.
    It would have made a lot more sense for the Chinese to let the flight land and disappear them inside the airport or the cars carrying them from there.

    It you really like this line of consptheory, is more plausible that the CIA learnt about the impeding defection and blew up the plane rather than let them get out of the American hands.

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