Isi yarenze kuri kwant urufunguzo rwambere

Isi yarenze kuri kwant urufunguzo rwambere. Igipimo cyingenzi cyinkomoko imwe ya fotone yazamutseho 79%.

Ikwirakwizwa rya Quantum(QKD) ni tekinoroji yo gushishoza ishingiye ku mahame agenga umubiri kandi yerekana ubushobozi bukomeye mu kuzamura umutekano w’itumanaho. Iri koranabuhanga ryohereza urufunguzo rwibanga ukoresheje kwantum ya fotone cyangwa ibindi bice. Kubera ko leta ya kwant idashobora kwigana cyangwa gupimwa idahinduye leta zayo, byongera cyane ingorane zamashyaka mabi guhagarika ibiri mu itumanaho hagati yimpande zombi bitamenyekanye. Bitewe ningorabahizi mugutegura inkomoko yukuri-imwe ya fotone (SPS), sisitemu nyinshi zo gukwirakwiza kwant (QKD) sisitemu yatejwe imbere yishingikiriza kuri attenuatedisoko yumucyobigana fotone imwe, nkimbaraga nke za laser pulses. Kubera ko izo laser puls zishobora no kuba zitarimo fotone cyangwa fotone nyinshi, gusa 37% byimpiswi zikoreshwa muri sisitemu zirashobora gukoreshwa mugutanga urufunguzo rwumutekano. Abashakashatsi b'Abashinwa baherutse gutsinda imbogamizi za sisitemu yatanzwe mbere yo gukwirakwiza (QKD). Bakoresheje amasoko yukuri ya fotone (SPS, ni ukuvuga sisitemu zishobora gusohora fotone kugiti cye kubisabwa).

Intego nyamukuru yabashakashatsi nukubaka sisitemu yumubiri ishoboye gusohora fotone imwe-yumucyo mwinshi kubisabwa, bityo bikarenga imbogamizi zifatika zihura n’isoko ry’umucyo wagabanutse mu bihe byashize mu kubaka sisitemu yo gukwirakwiza kwant (QKD). Icyizere cyabo nuko iyi sisitemu ishobora kongera ubwizerwe nigikorwa cyo gukwirakwiza kwant kwingirakamaro (QKD), bityo igashyiraho urufatiro rwo kohereza ejo hazaza mubidukikije. Kugeza ubu, igeragezwa ryageze ku bisubizo bitanga icyizere kuko SPS yabo yasanze ifite imikorere myiza cyane kandi ikongerera cyane igipimo ahoSisitemu ya QKDitanga urufunguzo rwumutekano. Muri rusange, ibyo byagaragaye byerekana ubushobozi bwa sisitemu ya QKD ishingiye kuri SPS, byerekana ko imikorere yabo ishobora kurenga cyane iy'imikorere ya QCD ishingiye kuri WCP. Abashakashatsi bagize bati: "Twerekanye ku nshuro ya mbere ko imikorere ya QKD ishingiye kuri SPS irenze igipimo fatizo cya WCP". Mu murima QKD ikizamini cyumuyoboro wubusa wubusa mumijyi hamwe no gutakaza 14.6 (1.1) dB, twageze ku gipimo cyingenzi cyizewe (SKR) cya 1.08 × 10−3 bits kuri pulse, cyari hejuru ya 79% kurenza igipimo nyacyo cya sisitemu ya QKD ishingiye kumucyo udahuje. Ariko, kuri ubu, umuyoboro ntarengwa wa sisitemu ya SPS-QKD uracyari munsi ugereranije na sisitemu ya WCP-QKD. Gutakaza umuyoboro wo hasi wabonywe nabashakashatsi muri sisitemu yo gukwirakwiza kwinshi (QKD) ntabwo byaturutse kuri sisitemu ubwayo, ahubwo byatewe ningaruka zisigaye za fotone nyinshi muri protocole idafite uburiganya bakoraga. Mubice byubushakashatsi buzaza, bizeye kuzamura kwihanganira igihombo cya sisitemu mugukomeza kunoza imikorere yinkomoko imwe ya fotone (SPS) kumurongo wo hasi wa sisitemu cyangwa kwinjiza ibihugu byinshyi muri sisitemu. Byizerwa ko iterambere ryikoranabuhanga rihoraho rizateza imbere buhoro buhoro iterambere ryikwirakwizwa ryibanze (QKD) rigana mubikorwa rusange kandi rusange.