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Secure communication with a publicly known key

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons60291

Beige,  Almut
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;
Quantum Dynamics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60478

Englert,  Berthold-Georg
Laser Physics, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60651

Kurtsiefer,  Christian
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons60928

Weinfurter,  Harald
Laser Spectroscopy, Max Planck Institute of Quantum Optics, Max Planck Society;

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Zitation

Beige, A., Englert, B.-G., Kurtsiefer, C., & Weinfurter, H. (2002). Secure communication with a publicly known key. Acta Physica Polonica A, 101(3), 357-368.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-C247-D
Zusammenfassung
We present a scheme for direct and confidential communication between Alice and Bob, where there is no need for establishing a shared secret key first, and where the key used by Alice even will become known publicly. The communication is based on the exchange of single photons and each and every photon transmits one bit of Alice's message without revealing any information to a potential eavesdropper.