scholarly journals Kalman filter-enabled parameter estimation for simultaneous quantum key distribution and classical communication scheme over satellite-mediated link

2022 ◽  
Author(s):  
Hai Zhong ◽  
Wei Ye ◽  
Zhiyue Zuo ◽  
Duan Huang ◽  
ying guo
Keyword(s):  
Parameter Estimation ◽  
Kalman Filter ◽  
Quantum Key Distribution ◽  
Key Distribution ◽  
Classical Communication ◽  
Communication Scheme

scholarly journals Optical preamplifier based simultaneous quantum key distribution and classical communication scheme

2021 ◽  
Vol 70 (2) ◽  
pp. 1-8
Author(s):  
Zhong Hai ◽  
◽  
Ye Wei ◽  
Wu Xiao-Dong ◽  
Guo Ying ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Classical Communication ◽  
Communication Scheme

Quantum communication scheme with freely selectable users

2021 ◽  
pp. 2150156
Author(s):  
Tianqi Dou ◽  
Hongwei Liu ◽  
Jipeng Wang ◽  
Zhenhua Li ◽  
Wenxiu Qu ◽  
...  
Keyword(s):  
Quantum Key Distribution ◽  
Quantum Communication ◽  
Information Science ◽  
Quantum Secret Sharing ◽  
Key Distribution ◽  
Communication Process ◽  
Secret Key ◽  
Quantum Information Science ◽  
Transmission Distance ◽  
Communication Scheme

Quantum communication plays an important role in quantum information science due to its unconditional security. In practical implementations, the users of each communication vary with the transmitted information, and hence not all users are required to participate in each communication round. Therefore, improving the flexibility and efficiency of the actual communication process is highly demanded. Here, we propose a theoretical quantum communication scheme that realizes secret key distribution for both the two-party quantum key distribution (QKD) and multi-party quantum secret sharing (QSS) modes. The sender, Alice, can freely select one or more users to share keys among all users, and nonactive users will not participate in the process of secret key sharing. Numerical simulations show the superiority of the proposed scheme in transmission distance and secure key rate. Consequently, the proposed scheme is valuable for secure quantum communication network scenarios.

scholarly journals Chaotic Quantum Key Distribution

Cryptography ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 24
Author(s):  
Noah Cowper ◽  
Harry Shaw ◽  
David Thayer
Keyword(s):  
Quantum Computing ◽  
Quantum Key Distribution ◽  
Single Photon ◽  
Photon Emission ◽  
Key Distribution ◽  
Maximum Amount ◽  
Single Photons ◽  
Single Photon Emission ◽  
Amount Of Information ◽  
Communication Scheme

The ability to send information securely is a vital aspect of today’s society, and with the developments in quantum computing, new ways to communicate have to be researched. We explored a novel application of quantum key distribution (QKD) and synchronized chaos which was utilized to mask a transmitted message. This communication scheme is not hampered by the ability to send single photons and consequently is not vulnerable to number splitting attacks like other QKD schemes that rely on single photon emission. This was shown by an eavesdropper gaining a maximum amount of information on the key during the first setup and listening to the key reconciliation to gain more information. We proved that there is a maximum amount of information an eavesdropper can gain during the communication, and this is insufficient to decode the message.

scholarly journals Key rate of quantum key distribution with hashed two-way classical communication

2007 ◽  
Vol 76 (3) ◽  
Author(s):  
Shun Watanabe ◽  
Ryutaroh Matsumoto ◽  
Tomohiko Uyematsu ◽  
Yasuhito Kawano
Keyword(s):  
Quantum Key Distribution ◽  
Key Distribution ◽  
Classical Communication

scholarly journals Simultaneous Classical Communication and Quantum Key Distribution Based on Plug-and-Play Configuration with an Optical Amplifier

Entropy ◽  
2019 ◽  
Vol 21 (4) ◽  
pp. 333 ◽  
Author(s):  
Xiaodong Wu ◽  
Yijun Wang ◽  
Qin Liao ◽  
Hai Zhong ◽  
Ying Guo
Keyword(s):  
Quantum Key Distribution ◽  
Finite Size ◽  
Key Distribution ◽  
Optical Amplifier ◽  
Coherent Detection ◽  
Secret Key ◽  
Plug And Play ◽  
Classical Communication ◽  
Laser Sources ◽  
Simulation Results

We propose a simultaneous classical communication and quantum key distribution (SCCQ) protocol based on plug-and-play configuration with an optical amplifier. Such a protocol could be attractive in practice since the single plug-and-play system is taken advantage of for multiple purposes. The plug-and-play scheme waives the necessity of using two independent frequency-locked laser sources to perform coherent detection, thus the phase noise existing in our protocol is small which can be tolerated by the SCCQ protocol. To further improve its capabilities, we place an optical amplifier inside Alice’s apparatus. Simulation results show that the modified protocol can well improve the secret key rate compared with the original protocol whether in asymptotic limit or finite-size regime.

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