High Efficiency Continuous-Variable Quantum Key Distribution Based on ATSC 3.0 LDPC Codes
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TL;DR: This paper constructs the spatially coupled (SC)-low-density parity-check (LDPC) codes and quasi-cyclic (QC)-LDPC codes and introduces these codes for information reconciliation in the CVQKD system in order to improve the performance of reconciliation efficiency, and makes further improvements to final secret key rate and transmission distance.
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Abstract: Due to the rapid development of quantum computing technology, encryption systems based on computational complexity are facing serious threats. Based on the fundamental theorem of quantum mechanics, continuous-variable quantum key distribution (CVQKD) has the property of physical absolute security and can effectively overcome the dependence of the current encryption system on the computational complexity. In this paper, we construct the spatially coupled (SC)-low-density parity-check (LDPC) codes and quasi-cyclic (QC)-LDPC codes by adopting the parity-check matrices of LDPC codes in the Advanced Television Systems Committee (ATSC) 3.0 standard as base matrices and introduce these codes for information reconciliation in the CVQKD system in order to improve the performance of reconciliation efficiency, and then make further improvements to final secret key rate and transmission distance. Simulation results show that the proposed LDPC codes can achieve reconciliation efficiency of higher than 0.96. Moreover, we can obtain a high final secret key rate and a long transmission distance through using our proposed LDPC codes for information reconciliation.
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Citations
Continuous-variable quantum key distribution system: Past, present, and future
Yichen Zhang,Yiming Bian,Zhengyu Li,Song Yu,Hong Guo +4 more
TL;DR: This review article discusses the continuous-variable quantum key distribution system, its principles, protocols, and implementations, highlighting advancements in security, system structure, and future applications, including digital techniques and point-to-multipoint systems.
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Virtual channel of multidimensional reconciliation in a continuous-variable quantum key distribution
TL;DR: In this article, the signal-to-noise ratio (SNR) of the virtual channel of multidimensional reconciliation in a continuous variable quantum key distribution (CVQKD) system is studied.
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Information reconciliation of continuous-variables quantum key distribution: principles, implementations and applications
Shen-Shen Yang,Zhilei Yan,Hongzhao Yang,Qing Lu,Zhenguo Lu,Liuyong Cheng,Xiangyang Miao,Yongmin Li +7 more
TL;DR: This paper introduces the rate-compatible codes, the hardware acceleration of the reconciliation algorithm, the research progress of information reconciliation, and its application in continuous variable QKD.
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An Improved Slice Reconciliation Protocol for Continuous-Variable Quantum Key Distribution.
TL;DR: Rotated-SEC (RSEC) as discussed by the authors performs a random orthogonal rotation on the raw data before quantization, and deduces a new estimator for the quantized sequences.
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High Efficiency Continuous-Variable Quantum Key Distribution Based on Quasi-Cyclic LDPC Codes
Kun Zhang,Xue-Qin Jiang,Yan Feng,Runhe Qiu,Enjian Bai +4 more
- 01 Nov 2020
TL;DR: This work construct Quasi-Cyclic low-density paritycheck codes based on LDPC codes in the digital video broadcasting second generation terrestrial (DVB-T2) standard, and then combine these codes with information reconciliation in the CVQKD system, which can extremely ameliorate the performance of secret key rate and maximum transmission distance.
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References
Quantum Cryptography
TL;DR: The author revealed that quantum teleportation as “Quantum one-time-pad” had changed from a “classical teleportation” to an “optical amplification, privacy amplification and quantum secret growing” situation.
Quantum cryptography
TL;DR: A protocol for coin-tossing by exchange of quantum messages is presented, which is secure against traditional kinds of cheating, even by an opponent with unlimited computing power, but ironically can be subverted by use of a still subtler quantum phenomenon, the Einstein-Podolsky-Rosen paradox.
6.2K
Gaussian quantum information
Christian Weedbrook,Stefano Pirandola,Raúl García-Patrón,Nicolas J. Cerf,Timothy C. Ralph,Jeffrey H. Shapiro,Seth Lloyd +6 more
TL;DR: This review focuses on continuous-variable quantum information processes that rely on any combination of Gaussian states, Gaussian operations, and Gaussian measurements, including quantum communication, quantum cryptography, quantum computation, quantum teleportation, and quantum state and channel discrimination.
The security of practical quantum key distribution
Valerio Scarani,Helle Bechmann-Pasquinucci,Nicolas J. Cerf,Miloslav Dušek,Norbert Lütkenhaus,Momtchil Peev +5 more
TL;DR: Essential theoretical tools that have been developed to assess the security of the main experimental platforms are presented (discrete- variable, continuous-variable, and distributed-phase-reference protocols).
Quantum cryptography: Public key distribution and coin tossing
Charles H. Bennett,Gilles Brassard +1 more
TL;DR: A protocol for coin-tossing by exchange of quantum messages is presented, which is secure against traditional kinds of cheating, even by an opponent with unlimited computing power, but ironically can be subverted by use of a still subtler quantum phenomenon, the Einstein-Podolsky-Rosen paradox.