Quantum Steganography with High Efficiency with Noisy Depolarizing Channels

Xin LIAO  Qiaoyan WEN  Tingting SONG  Jie ZHANG  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E96-A   No.10   pp.2039-2044
Publication Date: 2013/10/01
Online ISSN: 1745-1337
DOI: 10.1587/transfun.E96.A.2039
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Cryptography and Information Security
quantum steganography,  depolarizing channel,  quantum teleportation,  

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Quantum steganography is to send secret quantum information through a quantum channel, such that an unauthorized user will not be aware of the existence of secret data. The depolarizing channel can hide quantum information by disguising it as channel errors of a quantum error-correcting code. We improve the efficiency of quantum steganography with noisy depolarizing channels, by modifying the twirling procedure and adding quantum teleportation. The proposed scheme not only meets the requirements of quantum steganography but also has higher efficiency.