arXiv:quant-ph/0403230Generalizing Several Theoretical Deterministic Secure Direct Bidirectional Communications to Improve Their CapacitiesZ. J. Zhang, Zhong‐Xiao ManPublished Mar 31, 2004• 0 citationsarXivHTMLPDFAbstractSeveral theoretical Deterministic Secure Direct Bidirectional Communication protocols are generalized to improve their capacities by introducing the superdense-coding in the case of high-dimension quantum states.DOI10.48550/arxiv.quant-ph/0403230