Experimental free-space quantum key distribution with efficient error correction

Liu, Weiyue; Wu, Teng; Li, Fengzhi; Jin, Biao; Tang, Yu; Hu, Heng-Ming; Li, Zhengping; Zhang, Liang; Cai, Wen-Qi; Liao, Sheng-Kai; Cao, Yuan; Peng, Cheng-Zhi

doi:10.1364/oe.25.010716

Cited by 9 publications

(3 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Currently, however, limited work has been reported in this area. Nonetheless, we do note some work on turbo codes [257] applied to the CV domain, as reported in [258] (for use of such codes in the DV domain see [259], [260]). Furthermore, polar codes [261] have recently been invoked for CV-QKD in [262].…”

Section: B Ldpc Codesmentioning

confidence: 99%

Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook

Hosseinidehaj

Babar

Malaney

et al. 2019

IEEE Commun. Surv. Tutorials

149

View full text Add to dashboard Cite

The recent launch of the Micius quantum-enabled satellite heralds a major step forward for long-range quantum communication. Using single-photon discrete-variable quantum states, this exciting new development proves beyond any doubt that all of the quantum protocols previously deployed over limited ranges in terrestrial experiments can in fact be translated to global distances via the use of low-orbit satellites. In this work we survey the imminent extension of space-based quantum communication to the continuous-variable regime -the quantum regime perhaps most closely related to classical wireless communications. The CV regime offers the potential for increased communication performance, and represents the next major step forward for quantum communications and the development of the global quantum internet.

show abstract

Section: B Ldpc Codesmentioning

confidence: 99%

Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook

Hosseinidehaj

Babar

Malaney

et al. 2019

IEEE Commun. Surv. Tutorials

149

View full text Add to dashboard Cite

show abstract

“…References [ 20 , 21 ] each describe an experimental free space optical QKD system with the performance shown in table 1 . The table also shows the parameters for our proposed system where the following assumptions and observations have been made.…”

Section: Comparison With Qkdmentioning

confidence: 99%

Secure key distribution exploiting error rate criticality for radio frequency links

Stevens,

Allen,

Brown

2023

R. Soc. open sci.

View full text Add to dashboard Cite

We propose a method by which two radio frequency (RF) communication terminals exchange encryption keys or other data securely. This method draws on the approach developed for quantum key distribution (QKD) for detecting eavesdroppers but our method does not use any quantum properties at all. Instead, by exploiting the effects an eavesdropper has on channel stability, we explore a line-of-sight link radio in which data transfer rates are so high as to approach the Shannon limit. With very steep rises in bit error rate accompanying a small degradation of signal-to-noise limits for certain forward error correction codes, it becomes possible to infer the existence of an eavesdropper before they are able to obtain a complete key. We describe our method and analyse one possible implementation using low density parity check codes with quadrature phase shift keying modulation. The proposed technique is in principle far easier to implement than quantum-based approaches for RF and optical wireless links since the required hardware is readily available and the basic principles are well known and well understood. Finally, we show our method to have a higher key rate and spectral efficiency than those of QKD.

show abstract

“…[11] Researchers use various techniques, such as QER management protocols, signal regeneration strategies, and advanced decryption processes, to address these challenges. [12][13][14] The security of communication is threatened by the potential impact of quantum computing on current encryption methods. [15,16] Classical cryptography, once considered impregnable, is now facing an existential threat due to quantum algorithms that can break the codes that underpin our digital world.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Quantum Error Resilience for Quantum Communication in Guided and Unguided Media

Sihare

2024

Adv Quantum Tech

View full text Add to dashboard Cite

This research examines quantum key distribution and its applications in guided and unguided quantum communication. The importance of secure communication in the quantum era requires a thorough exploration of both guided and unguided quantum communication strategies. The research aims to address the challenges posed by guided channels, such as fiber optics, and unguided channels, such as free‐space quantum communication. This study addresses existing knowledge gaps in quantum error resilience management and signal processing techniques in unguided quantum communication. Advanced quantum gate analysis, environmental noise analysis, and quantum channel modeling techniques are employed. The research presents key findings on the impact of gate imperfections on quantum error resilience in guided media, the influence of noise‐induced errors in unguided media, and a unified metric for assessing various error sources in guided channels. Additionally, the study analyses stabilizer codes and surface codes for error mitigation through quantum error correction strategies. Simulation results provide a benchmark for theoretical predictions and guide the refinement of quantum communication protocols. In this context, machine learning‐based error prediction is introduced as a cutting‐edge approach to enhance the robustness of quantum communication systems.

show abstract

Experimental free-space quantum key distribution with efficient error correction

Cited by 9 publications

References 19 publications

Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook

Satellite-Based Continuous-Variable Quantum Communications: State-of-the-Art and a Predictive Outlook

Secure key distribution exploiting error rate criticality for radio frequency links

Analyzing Quantum Error Resilience for Quantum Communication in Guided and Unguided Media

Contact Info

Product

Resources

About