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Quantum cryptography with a photon turnstile

Edo Waks (), Kyo Inoue, Charles Santori, David Fattal, Jelena Vuckovic, Glenn S. Solomon and Yoshihisa Yamamoto
Additional contact information
Edo Waks: Quantum Entanglement Project, ICORP, JST, MURI, UCLA, E. L. Ginzton Labs, Stanford University
Kyo Inoue: NTT Basic Research Laboratories
Charles Santori: Quantum Entanglement Project, ICORP, JST, MURI, UCLA, E. L. Ginzton Labs, Stanford University
David Fattal: Quantum Entanglement Project, ICORP, JST, MURI, UCLA, E. L. Ginzton Labs, Stanford University
Jelena Vuckovic: Quantum Entanglement Project, ICORP, JST, MURI, UCLA, E. L. Ginzton Labs, Stanford University
Glenn S. Solomon: Solid State Photonics Laboratory, Stanford University
Yoshihisa Yamamoto: Quantum Entanglement Project, ICORP, JST, MURI, UCLA, E. L. Ginzton Labs, Stanford University

Nature, 2002, vol. 420, issue 6917, 762-762

Abstract: Abstract Quantum cryptography generates unbreakable cryptographic codes by encoding information using single photons, which until now have relied on highly attenuated lasers as sources1,2. But these sources can create pulses that contain more than one photon, making them vulnerable to eavesdropping by photon splitting3,4. Here we present an experimental demonstration of quantum cryptography that uses a photon turnstile device, which is more reliable for delivering photons one at a time. This device allows completely secure communication in circumstances under which this would be impossible with an attenuated laser.

Date: 2002
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DOI: 10.1038/420762a

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