Ụwa agafeela oke igodo quantum maka oge mbụ

Ụwa agafeela oke igodo quantum maka oge mbụ. Ọnụego isi nke ezigbo isi iyi foton amụbaala site na 79%.

Nkesa Igodo Quantum(QKD) bụ teknụzụ nzuzo nke dabere na ụkpụrụ anụ ahụ nke quantum ma na-egosi nnukwu ikike n'ime ka nchekwa nkwukọrịta dịkwuo mma. Teknụzụ a na-ebufe igodo nzuzo site na iji ọnọdụ quantum nke photons ma ọ bụ ihe ndị ọzọ. Ebe ọ bụ na enweghị ike ịmegharị ma ọ bụ tụọ ọnọdụ quantum ndị a na-agbanweghị ọnọdụ ha, ọ na-eme ka ihe isi ike maka ndị obi ọjọọ igbochi ọdịnaya nkwukọrịta n'etiti akụkụ abụọ ahụ na-enweghị ịchọpụta. N'ihi ihe isi ike dị na ịkwadebe isi mmalite otu-photon (SPS), ọtụtụ sistemụ nkesa quantum (QKD) nke emepụtara ugbu a dabere na mbelataisi mmalite ọkụnke na-eme ka foton otu, dị ka obere ike laser pulses. Ebe ọ bụ na pulsen laser ndị a nwekwara ike ịnwe enweghị photon ma ọ bụ ọtụtụ photon, naanị ihe dị ka 37% nke pulses eji na sistemụ ahụ ka enwere ike iji mepụta igodo nchekwa. Ndị nchọpụta China emeriela oke mmachi nke sistemụ nkesa quantum Key (QKD) nke a tụrụ aro na mbụ. Ha ejirila ezigbo isi mmalite otu photon (SPS, ya bụ, sistemụ nwere ike iwepụta photon nke ọ bụla ma ọ bụrụ na achọrọ ya).

Isi ihe mgbaru ọsọ nke ndị nchọpụta bụ iwulite sistemụ anụ ahụ nke nwere ike iwepụta otu foton na-enwu gbaa nke ukwuu mgbe achọrọ ya, si otú a merie oke ndị bụ isi nke isi iyi ọkụ na-adịghị ike nke ejiri n'oge gara aga wuo sistemụ nkesa isi quantum (QKD) na-eche ihu. Olileanya ha bụ na sistemụ a nwere ike ime ka ntụkwasị obi na arụmọrụ nke teknụzụ nkesa isi quantum (QKD) dịkwuo mma, si otú a na-atọ ntọala maka ntinye ya n'ọdịnihu na gburugburu ụwa n'ezie. Ugbu a, nnwale ahụ enwetala nsonaazụ dị mma n'ihi na achọpụtala na SPS ha nwere arụmọrụ dị elu ma na-amụba ọnụego nke na-eme ka ọ dịkwuo elu nke ukwuu.Sistemụ QKDna-emepụta igodo nchekwa. N'ozuzu, nchọpụta ndị a na-egosipụta ike nke sistemụ QKD dabere na SPS, na-egosi na arụmọrụ ha nwere ike ịkarị nke sistemụ QKD dabere na WCP. "Anyị egosila maka oge mbụ na arụmọrụ nke QKD dabere na SPS gafere oke ọnụego isi nke WCP," ka ndị nchọpụta kwuru. N'ọhịa nnwale QKD nke ọwa obodo mepere emepe nwere mfu nke 14.6(1.1) dB, anyị nwetara ọnụego igodo nchekwa (SKR) nke 1.08 × 10−3 bits kwa pulse, nke dị 79% karịa oke n'ezie nke sistemụ QKD dabere na ìhè na-adịghị ike. Agbanyeghị, ugbu a, mfu ọwa kachasị elu nke sistemụ SPS-QKD ka dị ala karịa nke sistemụ WCP-QKD. Mfu ọwa dị ala nke ndị nchọpụta hụrụ na sistemụ nkesa igodo quantum ha (QKD) esiteghị na sistemụ ahụ n'onwe ya, mana e kenyere ya na mmetụta multi-photon fọdụrụ na usoro enweghị decoy ha na-agba. Dịka akụkụ nke nnyocha n'ọdịnihu, ha nwere olileanya ịkwalite nnabata nke sistemụ ahụ site n'ịkwalite arụmọrụ nke isi iyi otu-photon (SPS) na oyi akwa ala nke sistemụ ahụ ma ọ bụ itinye ọnọdụ nri n'ime sistemụ ahụ. A kwenyere na ọganihu teknụzụ na-aga n'ihu ga-akwalite mmepe nke nkesa isi quantum (QKD) iji mee ihe bara uru na nke izugbe.