Quantum Information Processing
Enhancement on "quantum blind signature based on two-state vector formalism"
Quantum Information Processing
Fault tolerant deterministic quantum communications using GHZ states over collective-noise channels
Quantum Information Processing
Quantum Information Processing
Trojan horse attack free fault-tolerant quantum key distribution protocols
Quantum Information Processing
Fault tolerant authenticated quantum direct communication immune to collective noises
Quantum Information Processing
Quantum Information Processing
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This work proposes two quantum dialogue protocols, each of which is robust against one of the following two kinds of collective noise: collective-dephasing noise and collective-rotation noise. Both quantum dialogue protocols are constructed from four-qubit DF states that consist of two Bell states. The receiver simply performs two Bell state measurements to obtain the secret message. Moreover, the proposed protocols are free from information leakage because some shared private quantum states are established in the new protocols to allow the legitimate users to exchange their secret messages securely.