An Efficient Deterministic Secure Quantum Communication Scheme with W State

In this paper, a novel deterministic secure quantum communication scheme with four-qubit W states is proposed. By utilizing four kinds of unitary operations, the two legitimate users can directly transmit the secret messages based on the Bell measurements and some additional classical information. A...

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Bibliographic Details
Main Authors: Wenjie Liu, Hanwu Chen, Tinghuai Ma, Wei Tian
Format: Conference Proceeding
Language:English
Subjects:
Computational intelligence
Computer security
Cryptography
Deterministic Secure Quantum Communication
Information security
Paramagnetic resonance
Protocols
Quantum Communication
Quantum computing
Quantum entanglement
Quantum mechanics
Single-Photon Checking
Software
W State
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Summary:In this paper, a novel deterministic secure quantum communication scheme with four-qubit W states is proposed. By utilizing four kinds of unitary operations, the two legitimate users can directly transmit the secret messages based on the Bell measurements and some additional classical information. Analysis shows that our scheme has a high capacity as each W state can carry two bits of secret information, and has a high efficiency as the intrinsic efficiency approaches the maximal value 100% and the total efficiency is 33.3%. Moreover, this scheme is unconditionally secure and feasible with present-day technique.
DOI:10.1109/CIS.2008.48