Quantum Key Distribution with Blind Polarization Bases

Abstract

We propose a new quantum key distribution scheme that uses the blind polarization basis. In our scheme the sender and the receiver share key information by exchanging qubits with arbitrary polarization angles without basis reconciliation. As only random polarizations are transmitted, our protocol is secure even when a key is embedded in a not-so-weak coherent-state pulse. We show its security against the photon number splitting attack and the impersonation attack.

Security has been improved upon referee's comment. 4 pages and 2 figures

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• Multiparty quantum cryptographic protocol
• Quantum no-key protocol for secure communication of classical message
• Quantum no-key protocols for secret transmission of quantum and classical message
• Cryptography based on operator theory (I): quantum no-key protocols
• On the negativity of the Wigner function as a measure of entanglement under quantum polarization converter devices
• Mutual authenticated quantum no-key encryption scheme over private quantum channel