Nyika yadarika muganho we quantum key key key kekutanga

Nyika yadarika muganho we quantum key key kekutanga. Kuwanda kwe key ye true-photon source kwakwira ne79%.

Kugoverwa kweKiyi yeQuantum(QKD) tekinoroji yekunyora makiyi yakavakirwa pamisimboti yefizikisi yequantum uye inoratidza kugona kukuru mukusimudzira kuchengetedzeka kwekutaurirana. Iyi tekinoroji inotumira makiyi ekunyora makiyi nekushandisa mamiriro equantum emaphoton kana zvimwe zvikamu. Sezvo aya mamiriro equantum asingakwanise kudzokororwa kana kuyerwa pasina kuchinja mamiriro avo, zvinowedzera kuoma kune mapato ane hutsinye kubata zviri mukati mekutaurirana pakati pemativi maviri pasina kuonekwa. Nekuda kwekuoma kwekugadzira masosi echokwadi e-single-photon (SPS), akawanda masisitimu ekuparadzira makiyi equantum (QKD) akagadzirwa parizvino anovimba neattenuatedmanyuko echiedzadzinotevedzera maphotoni madiki, akadai semapulse elaser ane simba rakaderera. Sezvo mapulse aya elaser angasave nemaphotoni kana maphotoni akawanda, angangoita 37% chete yemapulse anoshandiswa musystem anogona kushandiswa kugadzira makiyi ekuchengetedza. Vaongorori vekuChina vachangobva kukunda zvipingamupinyi zvesystem yakambofungidzirwa yequantum Key distribution (QKD). Vakashandisa masource chaiwo e single-photon (SPS, kureva masisitimu anokwanisa kuburitsa maphotoni ega ega kana achida).

Chinangwa chikuru chevaongorori ndechekuvaka sisitimu yepanyama inokwanisa kuburitsa maphotoni madiki anopenya zvakanyanya kana zvichidiwa, nokudaro ichikunda zvipingamupinyi zvikuru zvaisangana nemasosi echiedza asina simba aishandiswa kare kugadzira masisitimu e quantum key distribution (QKD). Tariro yavo ndeyekuti sisitimu iyi inogona kuwedzera kuvimbika uye kushanda kwetekinoroji ye quantum key distribution (QKD), nokudaro ichiisa hwaro hwekuiswa kwayo mune ramangwana munzvimbo chaidzo. Parizvino, kuyedza kwakawana mhedzisiro inovimbisa nekuti SPS yavo yakawanikwa iine kushanda kwakanyanya uye inowedzera zvakanyanya mwero weSisitimu yeQKDinogadzira makiyi ekuchengetedza. Zvose izvi zvakawanikwa zvinoratidza kugona kwemasystem eQKD akavakirwa paSPS, zvichiratidza kuti mashandiro awo anogona kupfuura zvakanyanya ayo emasystem eQKD akavakirwa paWCP. "Taratidza kekutanga kuti mashandiro eQKD akavakirwa paSPS anodarika muganho wechiyero cheWCP," vaongorori vakadaro. Mukuyedzwa kweQKD kwenzira yemaguta yakasununguka nekurasikirwa kwe14.6(1.1) dB, takawana chiyero chekiyi chakachengeteka (SKR) che1.08 × 10−3 bits pakurova kwemoyo, icho chaive chakakwirira ne79% kupfuura muganho chaiwo wesystem yeQKD zvichibva pachiedza chisina kusimba. Zvisinei, parizvino, kurasikirwa kwakanyanya kwechiteshi cheSPS-QKD system kuchiri kuderera pane kwesystem yeWCP-QKD. Kurasikirwa kwakaderera kwechiteshi kwakaonekwa nevaongorori musystem yavo yequantum key distribution (QKD) hakuna kubva musystem pachayo, asi kwakakonzerwa nemhedzisiro yeresidual multi-photon muprotocol isina decoy yavaimhanya. Sechikamu chekutsvaga mune ramangwana, vanotarisira kuwedzera kushivirira kurasikirwa kwehurongwa nekuwedzera kugadzirisa mashandiro echinhu chimwe chete chine photon (SPS) pasi pehurongwa kana kuisa mamiriro echibatiso muhurongwa. Zvinotendwa kuti kufambira mberi kwetekinoroji kuchasimudzira zvishoma nezvishoma kukura kwe quantum key distribution (QKD) kune mashandisirwo anoshanda uye akajairika.