Kev faib tawm ntawm tus yuam sij quantum (QKD) yog ib txoj kev sib txuas lus ruaj ntseg uas siv cov txheej txheem cryptographic uas muaj cov khoom ntawm quantum mechanics. Nws ua rau ob tog tsim tau ib tus yuam sij zais cia uas tsuas yog lawv paub xwb, uas tom qab ntawd tuaj yeem siv los encrypt thiab decrypt cov lus. Nws feem ntau hu ua quantum cryptography tsis raug, vim nws yog qhov piv txwv zoo tshaj plaws ntawm txoj haujlwm quantum cryptographic.
Txawm hais tias muaj muag tau ntau xyoo los xij, kev vam meej tseem txuas ntxiv mus rau kev ua kom cov kab ke no me dua, pheej yig dua, thiab muaj peev xwm ua haujlwm tau deb dua. Cov no yog qhov tseem ceeb rau kev siv cov thev naus laus zis no los ntawm tsoomfwv thiab kev lag luam. Kev koom ua ke ntawm cov kab ke QKD no rau hauv cov khoom siv network uas twb muaj lawm yog qhov kev sib tw tam sim no thiab cov pab pawg ntau yam ntawm cov chaw tsim khoom siv sib txuas lus, cov chaw muab khoom siv tseem ceeb, cov neeg ua haujlwm network, cov chaw muab khoom siv QKD, cov kws tshaj lij kev ruaj ntseg digital thiab cov kws tshawb fawb, tab tom ua haujlwm rau qhov no.
QKD muab ib txoj hauv kev los faib thiab sib qhia cov yuam sij zais cia uas tsim nyog rau cov txheej txheem cryptographic. Qhov tseem ceeb ntawm no yog xyuas kom meej tias lawv tseem nyob ntiag tug, piv txwv li ntawm cov neeg sib txuas lus. Txhawm rau ua qhov no, peb vam khom qhov uas tau pom tias yog qhov teeb meem ntawm cov txheej txheem quantum; yog tias koj "saib" lawv, lossis cuam tshuam lawv hauv txhua txoj kev, koj "rhuav tshem" cov yam ntxwv quantum.