Quantum secure communication scheme with W state

Abstract

Recently, Cao et al. proposed a new quantum secure direct communication scheme using W state. In their scheme, the error rate introduced by an eavesdropper who takes intercept-resend attack, is only 8.3%. Actually, their scheme is just a quantum key distribution scheme because the communication parties first create a shared key and then encrypt the secret message using one-time pad. We then present a quantum secure communication scheme using three-qubit W state. In our scheme, the error rate is raised to 25% and it is not necessary for the present scheme to use alternative measurement or Bell basis measurement. We also show our scheme is unconditionally secure.

Comments are welcome

References in corpus (7)

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• Efficient generation of multipartite W state via quantum eraser
• Experimental demonstration of the violations of Mermin's and Svetlichny's inequalities for W- and GHZ-class of states
• LIMDD: A Decision Diagram for Simulation of Quantum Computing Including Stabilizer States
• Improved protocols of secure quantum communication using W states
• Fusing atomic $W$ states via quantum Zeno dynamics
• Almost perfect transmission of multipartite entanglement through disordered and noisy spin chains
• Quantum thermometry in a squeezed thermal bath
• Single photon generation and non-locality of perfect W-state
• Entanglement dynamics governed by time-dependent quantum generators
• Efficient generation of multiqubit entanglement states using rapid adiabatic passage
• Conversion of entangled states with nitrogen-vacancy centers coupled to microtoroidal resonators
• Quantum tomography of three-qubit generalized Werner states
• Non-locality and entanglement in multi-qubit systems from a unified framework
• Identifying families of multipartite states with non-trivial local entanglement transformations
• W-class states-identification and quantification of Bell-CHSH inequalities' violation
• Quantum cloning transformation unlocks the potential of W class of states in a quantum secure direct communication protocol
• Two- and three-mode squeezing in a three-qubit entangled system