Quantum direct communication protocols using discrete-time quantum walk
arXiv:2004.03273 · doi:10.1007/s11128-020-02793-4
Abstract
The unique features of quantum walk, such as the possibility of the walker to be in superposition ofthe position space and get entangled with the position space, provides inherent advantages that canbe captured to design highly secure quantum communication protocols. Here we propose two quan-tum direct communication protocols, a Quantum Secure Direct Communication (QSDC) protocoland a Controlled Quantum Dialogue (CQD) protocol using discrete-time quantum walk on a cycle.The proposed protocols are unconditionally secure against various attacks such as the intercept-resend attack, the denial of service attack, and the man-in-the-middle attack. Additionally, theproposed CQD protocol is shown to be unconditionally secure against an untrusted service providerand both the protocols are shown more secure against the intercept resend attack as compared tothe qubit based LM05/DL04 protocol.
arXiv comment12 pages, 4 figures, published version
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Cited by in corpus (7)
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- Universal and optimal coin sequences for high entanglement generation in 1D discrete time quantum walks
- Efficient implementation of discrete-time quantum walks on quantum computers
- Quantum direct communication protocol using recurrence in k-cycle quantum walk
- Logarithmic expansion of many-body wave packets in random potentials
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