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Top secret

Researchers have finally demonstrated a code system that is both unbreakable and impossible to intercept, says Jeremy Thomson.

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  1. Jennewein, T., Simon, C., Weihs, G., Weinfurter, H. & Zeilinger, A. Quantum cryptography with entangled photons. Physical Review Letters (in the press).

  2. Naik, D.S., Peterson, C.G., White, A.G., Berglund, A.J. & Kwiat, P.G. Entangled state quantum cryptography: Eavesdropping on the Ekert Protocol. Physical Review Letters (in the press).

  3. Tittel,W., Brendel, J., Zbinden, H. & Gisin, N. Quantum cryptography using entangled photons in energy-time bell states. Physical Review Letters (in the press).

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Thomson, J. Top secret. Nature (2000).

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