{"title":"Finite-key security of passive quantum key distribution","authors":"Víctor Zapatero, Marcos Curty","doi":"10.1103/physrevapplied.21.014018","DOIUrl":null,"url":null,"abstract":"The passive approach to quantum key distribution (QKD) eliminates all optical modulators and random number generators from QKD systems reaching an enhanced simplicity, immunity to modulator side channels, and potentially higher repetition rates. In this work, we provide finite-key security bounds for a fully passive decoy-state Bennett-Brassard 1984 (BB84) protocol, considering a recently presented passive QKD source. With our analysis, the attainable secret-key rate is comparable to that of the perfect parameter-estimation limit, in fact differing from the key rate of the active approach by less than one order of magnitude. This demonstrates the practicality of fully passive QKD solutions.","PeriodicalId":20109,"journal":{"name":"Physical Review Applied","volume":"5 1","pages":""},"PeriodicalIF":3.8000,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review Applied","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevapplied.21.014018","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
The passive approach to quantum key distribution (QKD) eliminates all optical modulators and random number generators from QKD systems reaching an enhanced simplicity, immunity to modulator side channels, and potentially higher repetition rates. In this work, we provide finite-key security bounds for a fully passive decoy-state Bennett-Brassard 1984 (BB84) protocol, considering a recently presented passive QKD source. With our analysis, the attainable secret-key rate is comparable to that of the perfect parameter-estimation limit, in fact differing from the key rate of the active approach by less than one order of magnitude. This demonstrates the practicality of fully passive QKD solutions.
期刊介绍：
Physical Review Applied (PRApplied) publishes high-quality papers that bridge the gap between engineering and physics, and between current and future technologies. PRApplied welcomes papers from both the engineering and physics communities, in academia and industry.
PRApplied focuses on topics including:
Biophysics, bioelectronics, and biomedical engineering,
Device physics,
Electronics,
Technology to harvest, store, and transmit energy, focusing on renewable energy technologies,
Geophysics and space science,
Industrial physics,
Magnetism and spintronics,
Metamaterials,
Microfluidics,
Nonlinear dynamics and pattern formation in natural or manufactured systems,
Nanoscience and nanotechnology,
Optics, optoelectronics, photonics, and photonic devices,
Quantum information processing, both algorithms and hardware,
Soft matter physics, including granular and complex fluids and active matter.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
