Quantum key tis (QKD) yog ib txoj kev sib txuas lus ruaj ntseg uas siv cov txheej txheem cryptographic uas muaj cov khoom ntawm quantum mechanics. Nws feem ntau hu ua quantum cryptography tsis raug, vim nws yog qhov zoo tshaj plaws-paub piv txwv ntawm quantum cryptographic ua haujlwm.
Thaum muaj kev lag luam ntau xyoo, kev nce qib txuas ntxiv ua rau cov tshuab no ntau dua, pheej yig dua, thiab muaj peev xwm ua haujlwm ntev dua. Cov no yog txhua yam tseem ceeb rau kev txhawb nqa cov thev naus laus zis los ntawm tsoomfwv thiab kev lag luam. Kev sib koom ua ke ntawm cov QKD cov kab ke no rau hauv cov txheej txheem network uas twb muaj lawm yog qhov kev sib tw tam sim no thiab ntau pawg kws tshaj lij ntawm cov cuab yeej siv xov tooj sib txuas lus, cov chaw muab kev pabcuam tseem ceeb, cov tswv lag luam network, QKD cov chaw muab khoom, cov kws tshaj lij kev ruaj ntseg thiab cov kws tshawb fawb, ua haujlwm rau qhov no.
QKD muab txoj hauv kev ntawm kev faib thiab sib koom cov yuam sij zais cia uas tsim nyog rau cov txheej txheem cryptographic. Qhov tseem ceeb ntawm no yog ua kom ntseeg tau tias lawv nyob twj ywm ntiag tug, piv txwv li ntawm cov neeg sib txuas lus. Ua li no, peb cia siab rau qhov uas tau pom ib zaug li qhov teeb meem ntawm quantum systems; Yog tias koj "saib" rau lawv, lossis cuam tshuam rau lawv txhua txoj kev, koj "tawg" cov yam ntxwv ntawm quantum.