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Quantum secure direct communication (QSDC) is an important quantum communication branch, which realizes the secure information transmission directly without encryption and decryption processes. Recently, two table-top experiments have…

Quantum Physics · Physics 2017-10-24 Feng Zhu , Wei Zhang , Yubo Sheng , Yidong Huang

Measurement-device-independent quantum secret sharing (MDI-QSS) can eliminate all the security loopholes associated with imperfect measurement devices and greatly enhance QS's security under practical experimental condition. MDI-QSS…

Quantum Physics · Physics 2024-05-28 Cheng Zhang , Qi Zhang , Wei Zhong , Ming-Ming Du , Shu-Ting Shen , Xi-Yun Li , An-Lei Zhang , Lan Zhou , Yu-Bo Sheng

Fast development of supercomputer and perspective quantum computer is posing increasing serious threats to communication security. Based on the laws of quantum mechanics, quantum communication offers provable security of communication, and…

Quantum secure data transfer is an important topic for quantum cyber security. We propose a scheme to realize quantum secure data transfer in the basis of quantum secure direct communication (QSDC). In this proposal, the transmitted data is…

Quantum Physics · Physics 2021-05-20 Rui-Xia Wang

Recently, Yan et al. proposed a quantum secure direct communication (QSDC) protocol with authentication using single photons and Einstein-Podolsky-Rosen (EPR) pairs (Yan et al., CMC-Computers, Materials \& Continua, 63(3), 2020). In this…

Quantum Physics · Physics 2022-02-23 Nayana Das , Goutam Paul

We propose the schemes of quantum secure direct communication (QSDC) based on secret transmitting order of particles. In these protocols, the secret transmitting order of particles ensures the security of communication, and no secret…

Quantum Physics · Physics 2009-11-13 Ai-Dong Zhu , Yan Xia , Qiu-Bo Fan , Shou Zhang

Quantum digital signatures (QDSs), which distribute and measure quantum states by key generation protocols and then sign messages via classical data processing, are a key area of interest in quantum cryptography. However, the practical…

Quantum Physics · Physics 2024-07-16 Jing-Wei Bian , Bing-Hong Li , Yuan-Mei Xie , Hua-Lei Yin , Zeng-Bing Chen

Communication security has to evolve to a higher plane in the face of the threat from the massive computing power of the emerging quantum computers. Quantum secure direct communication (QSDC) constitutes a promising branch of quantum…

Quantum Physics · Physics 2025-01-03 Dong Pan , Gui-Lu Long , Liuguo Yin , Yu-Bo Sheng , Dong Ruan , Soon Xin Ng , Jianhua Lu , Lajos Hanzo

We develop an information-theoretic analysis of Quantum-Memory-Free (QMF) Quantum Secure Direct Communication (QSDC) under collective attacks as an alternative to the use of a conventional Quantum Key Distribution (QKD) protocol in…

Quantum Physics · Physics 2026-05-04 Shang-Jen Su , Shi-Yuan Wang , Matthieu R. Bloch

In practical quantum communication, imperfect devices may introduce side channels, creating opportunities for eavesdroppers. Especially on the source side, the side channels created by active modulation may compromise the security of the…

Quantum Physics · Physics 2025-06-30 Jia-Wei Ying , Qi Zhang , Shi-Pu Gu , Xing-Fu Wang , Lan Zhou , Yu-Bo Sheng

Currently, the progress of quantum secure direct communication (QSDC) is impeded by a fundamental trade off among control efficiency, security, and scalability. This study proposes an innovative controlled QSDC protocol based on a…

Quantum Physics · Physics 2025-12-18 Ni-Shi Lu , Ping Zhou

Quantum communication holds promise for absolutely security in secret message transmission. Quantum secure direct communication is an important mode of the quantum communication in which secret messages are securely communicated over a…

Quantum Physics · Physics 2015-09-08 Jianyong Hu , Bo Yu , Mingyong Jing , Liantuan Xiao , Suotang Jia , Guoqing Qin , Guilu Long

We present a quantum hyperdense coding protocol with hyperentanglement in polarization and spatial-mode degrees of freedom of photons first and then give the details for a quantum secure direct communication (QSDC) protocol based on this…

Quantum Physics · Physics 2011-03-11 Tie-Jun Wang , Tao Li , Fang-Fang Du , Fu-Guo Deng

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 Physics · Physics 2020-08-27 Srikara S , C. M. Chandrashekar

Quantum secure direct communication is the direct communication of secret messages without first producing a shared secret key. It maybe used in some urgent circumstances. Here we propose a quantum secure direct communication protocol using…

Quantum Physics · Physics 2009-11-10 Fu-Guo Deng , Gui Lu Long

Quantum cryptographic conferencing (QCC) allows sharing secret keys among multiple distant users and plays a crucial role in quantum networks. Because of the fragility and low generation rate of genuine multipartite entangled states…

Quantum Physics · Physics 2025-02-04 Yifeng Du , Yufeng Liu , Chengdong Yang , Xiaodong Zheng , Shining Zhu , Xiao-song Ma

We present a subtle idea to economically improve message-unilaterally-transmitted quantum secure direct communication (QSDC) protocols to realize two-way secure direct communication.

Quantum Physics · Physics 2007-05-23 Zhan-jun Zhang , Zhong-xiao Man , Yong Li

Quantum Secure Direct Communication (QSDC), a paradigm-shifting breakthrough in quantum communication, exploits quantum states for unmediated information transmission. Rooted in the inviolable fundamental laws of quantum mechanics, QSDC…

Quantum Physics · Physics 2025-11-12 Min Wang , Gui-Fa Zhu , Guo-Fei Long , Jianxing Guo , Yu-Chen Liu , Dong Pan , Li-Ping Nong , Gui-Lu Long

Measurement-device-independent quantum key distribution (MDI-QKD) protocol was proposed to remove all the detector side channel attacks, while its security relies on the trusted encoding systems. Here we propose a one-sided MDI-QKD…

Quantum Physics · Physics 2018-01-18 Wen-Fei Cao , Yi-Zheng Zhen , Yu-Lin Zheng , Li Li , Zeng-Bing Chen , Nai-Le Liu , Kai Chen

Quantum dialogue is a process of two way secure and simultaneous communication using a single channel. Recently, a Measurement Device Independent Quantum Dialogue (MDI-QD) protocol has been proposed (Quantum Information Processing 16.12…

Quantum Physics · Physics 2022-02-23 Nayana Das , Goutam Paul