Entanglement purification with noisy apparatus can be used to factor out an eavesdropper |
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| Authors: | H Aschauer HJ Briegel |
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| Institution: | Sektion Physik, Ludwig-Maximilians-Universit?t, Theresienstr. 37, 80333 München, Germany, DE
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| Abstract: | We give a proof that entanglement purification, even with noisy apparatus, is sufficient to disentangle an eavesdropper (Eve)
from the communication channel. Our proof applies to all possible attacks (individual and coherent). Due to the quantum nature
of the entanglement purification protocol, it is also possible to use the obtained quantum channel for secure transmission
of quantum information.
Received 10 August 2001 and Received in final form 26 October 2001 |
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| Keywords: | PACS 03 67 Dd Quantum cryptography – 03 67 Hk Quantum communication |
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