Bit error rate - Communication channels (information theory) - Data communication systems - Light polarization - Light transmission - Network protocols - Optical beam splitters - Photons - Probability - Quantum cryptography - Security of data;
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摘要:
An undetectable eavesdropping scheme working on the realistic implementation of the ping-pong quantum communication protocol is presented. It exploits the fact that the ping-pong protocol is performed with the use of two distinct modes. Moreover, the information about which one fo them is actually used is revealed too soon, i.e., in the time when Eve still has access to the travel photon.