Nyika yakapaza quantum kiyi yekuganhura kekutanga

Nyika yakapaza quantum kiyi yekuganhura kekutanga. Mwero wakakosha weiyo yechokwadi single-photon sosi yakakwira ne79%.

Quantum Key Distribution(QKD) tekinoroji yekuvharidzira yakavakirwa pahuwandu hwemisimboti yemuviri uye inoratidza kugona kukuru mukusimudzira kuchengetedzeka kwekutaurirana. Iyi tekinoroji inofambisa makiyi ekunyorera nekushandisa quantum nyika dzemafotoni kana zvimwe zvimedu. Sezvo idzi quantum states dzisingagone kudzokororwa kana kuyerwa pasina kushandura matunhu adzo, zvinowedzera kuomerwa kwemapato ane hutsinye kuti atore zviri mukati menhaurirano pakati pemativi maviri aya pasina kuonekwa. Nekuda kwekunetsa mukugadzirira echokwadi single-photon masosi (SPS), mazhinji eiyo quantum kiyi yekugovera (QKD) masisitimu akagadzirwa parizvino anovimba neattenuated.magetsiiyo inotevedzera mafotoni ega, senge yakaderera-yakasimba laser pulses. Sezvo aya laser pulses anogonawo kunge asina mafotoni kana akawanda mafotoni, chete 37% yemapulses anoshandiswa musystem anogona kushandiswa kugadzira makiyi ekuchengetedza. Vatsvagiri veChinese vachangobva kubudirira kukunda zvipimo zveyaimbotaurwa quantum Key distribution (QKD) system. Ivo vakashandisa chaiyo imwe-photon masosi (SPS, kureva, masisitimu anokwanisa kuburitsa mafotoni ega paanoda).

Chinangwa chikuru chevanotsvakurudza ndechekuvaka hurongwa hwemuviri hunokwanisa kubudisa kupenya kwepamusoro-soro imwe chete painodiwa, nekudaro kukunda zvipingamupinyi zvakakosha zvinotarisana nemagetsi asina simba akashandiswa kare kugadzira quantum key distribution (QKD) masisitimu. Tariro yavo ndeyekuti sisitimu iyi inogona kukwidziridza kuvimbika nekuita kwequantum key distribution (QKD) tekinoroji, nekudaro ichiisa hwaro hwekuiswa kwayo mune ramangwana munzvimbo dzepasirese. Parizvino, kuyedza kwakawana mhedzisiro inovimbisa nekuti SPS yavo yakawanikwa iine hunyanzvi hwepamusoro uye inowedzera zvakanyanya chiyero ichoQKD systeminogadzira makiyi ekuchengetedza. Pakazere, izvi zvakawanikwa zvinosimbisa kugona kweSPS-based QKD masisitimu, zvichiratidza kuti mashandiro avo anogona kudarika zvakanyanya ayo eWCP-based QKD masisitimu. "Takaratidza kekutanga kuti kuita kweQKD kwakavakirwa paSPS kunodarika mwero wakakosha weWCP," vaongorori vakadaro. Mundima QKD bvunzo yemahara-nzvimbo yemudhorobha chiteshi nekurasikirwa kwe14.6(1.1) dB, takawana chiyero chakachengeteka chekiyi (SKR) ye1.08 × 10−3 bits per pulse, yaive 79% yakakwira kupfuura muganhu chaiwo weQKD system zvichibva pachiedza chisina kusimba. Nekudaro, parizvino, iyo yakanyanya kurasikirwa chiteshi cheSPS-QKD system ichiri yakaderera pane iyo yeWCP-QKD system. Iyo yakaderera chiteshi kurasikirwa yakacherechedzwa nevaongorori muhuwandu hwavo hwekugovera kiyi (QKD) system haina kubva kune iyo system pachayo, asi yakanzi yakakonzerwa neyakasara yakawanda-photon mhedzisiro mune decoy-isina protocol yavaimhanya. Sechikamu chetsvakiridzo yeramangwana, vanotarisira kusimudzira kurasikirwa kushivirira kwehurongwa nekuwedzera optimize mashandiro eiyo single-photon sosi (SPS) pazasi peiyo system kana kuunza bait states muhurongwa. Zvinotendwa kuti kuenderera mberi kwetekinoroji kunosimudzira zvishoma nezvishoma kuvandudzwa kwequantum kiyi yekugovera (QKD) kune inoshanda uye yakajairika mashandisiro.