Duniya ta karya iyakar maɓallan quantum a karon farko

Duniya ta ketare iyakar maɓallan quantum a karon farko. Adadin maɓallan ainihin tushen photon guda ɗaya ya ƙaru da kashi 79%.

Rarraba Maɓallin Kwatantawa(QKD) fasaha ce ta ɓoye bayanai bisa ƙa'idodin zahiri na quantum kuma tana nuna babban damar haɓaka tsaron sadarwa. Wannan fasaha tana watsa maɓallan ɓoye bayanai ta amfani da yanayin quantum na photons ko wasu barbashi. Tunda waɗannan yanayin quantum ba za a iya kwafi ko auna su ba tare da canza yanayinsu ba, yana ƙara wahalar da ɓangarorin mugunta su katse abubuwan sadarwa tsakanin ɓangarorin biyu ba tare da an gano su ba. Saboda wahalar shirya tushen gaskiya na photon guda ɗaya (SPS), yawancin tsarin rarraba maɓallan quantum (QKD) da aka haɓaka a halin yanzu sun dogara ne akan raguwar bayanai.tushen haskewaɗanda ke kwaikwayon photons guda ɗaya, kamar ƙananan ƙarfin laser. Tunda waɗannan laser pulses suma ba za su iya ƙunsar photons ko photons da yawa ba, kusan kashi 37% ne kawai na bugun da ake amfani da shi a cikin tsarin za a iya amfani da su don samar da maɓallan tsaro. Masu binciken China kwanan nan sun yi nasarar shawo kan iyakokin tsarin rarrabawa na maɓallan quantum (QKD) da aka gabatar a baya. Sun yi amfani da ainihin tushen photon guda ɗaya (SPS, wato, tsarin da ke iya fitar da photons na mutum ɗaya akan buƙata).

Babban burin masu binciken shine gina tsarin zahiri wanda zai iya fitar da photons guda ɗaya masu haske sosai idan ana buƙata, ta haka ne za a shawo kan ƙa'idodin asali da tushen hasken da aka yi amfani da su a baya don gina tsarin rarraba maɓallan quantum (QKD). Fatansu shine wannan tsarin zai iya haɓaka aminci da aikin fasahar rarraba maɓallan quantum (QKD), ta haka ne zai shimfida harsashin da za a yi amfani da shi a nan gaba a cikin yanayin duniya na gaske. A halin yanzu, gwajin ya cimma sakamako mai kyau saboda an gano cewa SPS ɗinsu yana da inganci sosai kuma yana ƙara yawan yadda ake amfani da shi a cikin yanayi na zahiri.Tsarin QKDyana samar da maɓallan tsaro. Gabaɗaya, waɗannan binciken sun nuna yuwuwar tsarin QKD na tushen SPS, wanda ke nuna cewa aikinsu na iya wuce na tsarin QKD na tushen WCP. "Mun nuna a karon farko cewa aikin QKD bisa ga SPS ya wuce iyakar ƙimar asali na WCP," in ji masu binciken. A fagen gwajin QKD na tashar birane mai sarari tare da asarar 14.6(1.1) dB, mun cimma ƙimar maɓalli mai aminci (SKR) na 1.08 × 10−3 rago a kowace bugun jini, wanda ya fi 79% sama da ainihin iyakar tsarin QKD bisa ga haske mai rauni. Duk da haka, a halin yanzu, matsakaicin asarar tashar tsarin SPS-QKD har yanzu yana ƙasa da na tsarin WCP-QKD. Ƙananan asarar tashar da masu bincike suka lura a cikin tsarin rarraba maɓallin quantum (QKD) ɗinsu bai samo asali daga tsarin da kansa ba, amma an danganta shi da tasirin saura mai yawa na photon a cikin yarjejeniyar da ba ta da decoy da suke gudanarwa. A matsayin wani ɓangare na bincike na gaba, suna fatan haɓaka rashin haƙuri na tsarin ta hanyar ƙara inganta aikin tushen photon guda ɗaya (SPS) a ƙasan tsarin ko shigar da yanayin koto cikin tsarin. Ana kyautata zaton ci gaba da ci gaba da fasaha zai haɓaka ci gaban rarraba maɓallin quantum (QKD) a hankali zuwa aikace-aikace masu amfani da gabaɗaya.