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Quantum Secure Direct Intercommunication with Superdense Coding and Entanglement Swapping |
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| Authors: | HUANG Da-Zu GUO Ying ZENG Gui-Hua |
| Institution: | School of Information Science & Engineering, Central South University, Changsha 410083, China ;Department of Information Management, Hunan College of Finance & Economics, Changsha 410205, China ;State Key Laboratory on Fiber-Optic Local Area Networks and Advanced Optical Communication Systems, Department of Electronic Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
| Abstract: | A quantum secure direct intercommunication scheme is proposed to exchange directly the communicators' secret messages by making use of swapping entanglement of Bell states. It has great capacity to distribute the secret messages since these messages have been imposed on high-dimensional Bell states via the local unitary operations with superdense coding. The security is ensured by the secure transmission of the travel sequences and the application of entanglement swapping. |
| Keywords: | quantum secure direct intercommunication entanglement swapping quantum cryptography |
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