Dziko ladutsa malire a makiyi a quantum kwa nthawi yoyamba

Dziko ladutsa malire a makiyi a quantum kwa nthawi yoyamba. Mlingo wofunikira wa gwero lenileni la chithunzi chimodzi chakwera ndi 79%.

Quantum Key Distribution(QKD) ndi ukadaulo wa encryption wozikidwa pa quantum physical principles ndipo ukuwonetsa kuthekera kwakukulu pakupititsa patsogolo chitetezo cha kulumikizana. Tekinoloje iyi imatumiza makiyi obisa pogwiritsa ntchito ma quantum states a photon kapena tinthu tating'ono. Popeza kuti zigawo za quantum sizingabwerezedwe kapena kuyeza popanda kusintha maiko awo, zimawonjezera zovuta kuti maphwando oyipa azitha kulumikizana pakati pa mbali ziwirizi popanda kuzindikirika. Chifukwa chazovuta pokonzekera zowona za single-photon (SPS), makina ambiri a quantum key distribution (QKD) omwe apangidwa pano amadalira kuchepetsedwa.magwero a kuwalazomwe zimatsanzira ma photon amodzi, monga ma pulse otsika kwambiri a laser. Popeza ma pulse a laser awa sangakhalenso ndi ma photon kapena ma photon angapo, pafupifupi 37% yokha ya ma pulse omwe amagwiritsidwa ntchito mu dongosololi angagwiritsidwe ntchito kupanga makiyi achitetezo. Ofufuza aku China posachedwapa athana ndi zoletsa zomwe zidapangidwa kale za quantum Key distribution (QKD). Agwiritsa ntchito magwero enieni a chithunzi chimodzi (SPS, ndiko kuti, makina omwe amatha kutulutsa mafotoni pawokha pakufunika).

Cholinga chachikulu cha ochita kafukufuku ndi kupanga dongosolo la thupi lomwe lingathe kutulutsa zithunzithunzi zowala kwambiri zomwe zimafunidwa, potero kuthana ndi zofooka zomwe zimakhudzidwa ndi kuwala kofooka komwe kumagwiritsidwa ntchito m'mbuyomo popanga machitidwe a quantum key distribution (QKD). Chiyembekezo chawo ndi chakuti dongosololi likhoza kupititsa patsogolo kudalirika ndi ntchito ya teknoloji ya quantum key distribution (QKD), potero kuyika maziko a kutumizidwa kwamtsogolo m'madera enieni. Pakalipano, kuyesako kwapeza zotsatira zabwino kwambiri chifukwa SPS yawo yapezeka kuti ikugwira ntchito bwino kwambiri ndikuwonjezera kwambiri mlingo umeneNdondomeko ya QKDamapanga makiyi achitetezo. Pazonse, zomwe zapezazi zikuwonetsa kuthekera kwa machitidwe a QKD ozikidwa pa SPS, kuwonetsa kuti magwiridwe antchito awo amatha kupitilira machitidwe a QKD a WCP. "Tawonetsa koyamba kuti magwiridwe antchito a QKD potengera SPS amapitilira malire a WCP," ofufuzawo adatero. M'munda woyeserera wa QKD wa tchanelo cham'matauni chaulere ndi kutayika kwa 14.6(1.1) dB, tidapeza makiyi otetezedwa (SKR) a 1.08 × 10−3 bits pa kugunda, komwe kunali 79% kuposa malire enieni a dongosolo la QKD kutengera kuwala kosagwirizana. Komabe, pakadali pano, kutayika kwakukulu kwa njira ya SPS-QKD kukadali kotsika poyerekeza ndi dongosolo la WCP-QKD. Kutayika kwa njira yotsika komwe ofufuza pamakina awo a quantum key distribution (QKD) sikunachokere ku dongosolo lokha, koma kunkachitika chifukwa cha zotsalira za ma photon ambiri mu protocol yopanda decoy yomwe anali kuyendetsa. Monga gawo la kafukufuku wamtsogolo, akuyembekeza kupititsa patsogolo kulolerana kwa dongosololi popititsa patsogolo magwiridwe antchito a gwero la single-photon (SPS) pansi pa dongosolo kapena kuyambitsa nyambo mudongosolo. Akukhulupirira kuti kupita patsogolo kwaukadaulo kumalimbikitsa pang'onopang'ono chitukuko cha quantum key distribution (QKD) pakugwiritsa ntchito moyenera komanso wamba.