Quantum Lub Rooj Sib Tham Tseem Ceeb (QKD) yog txoj kev sib txuas lus ruaj ntseg uas tau siv ob tog los tsim cov khoom siv cryptographic uas yuav siv tau los encrypt thiab cov lus daws teeb meem. Nws yog feem ntau hu ua quant daws, raws li nws yog qhov zoo tshaj plaws piv txwv ntawm ib tug quantum cryptographic txoj haujlwm.
Thaum pib ua lag luam tau ntau xyoo, kev nce qib txuas ntxiv ua cov kab ke no ntau dua kev cog lus, pheej yig dua, thiab muaj peev xwm ua haujlwm ntev dua. Cov no yog txhua qhov tseem ceeb rau qhov nce ntawm cov thev naus laus zis los ntawm tsoomfwv thiab kev lag luam. Kev sib koom ua ke ntawm cov qauv qkd no rau cov pab pawg ua lag luam uas tseem ceeb tshaj plaws, cov haujlwm hauv network, cov kws tshaj lij hauv network, cov kws tshaj lij hauv nroog, cov kws tshawb fawb cov kws tshaj lij, ua haujlwm ntawm qhov no.
Qkd muab txoj hauv kev faib tawm thiab sib qhia cov yuam sij zais zais uas tsim nyog rau cov kev cai cryptographic. Qhov tseem ceeb ntawm no yog nyob rau hauv kom ntseeg tau tias lawv nyob twj ywm, piv txwv li ntawm cov tog neeg sib txuas lus. Txhawm rau ua qhov no, peb cia siab rau dab tsi yog ib zaug pom tias qhov teeb meem ntawm quantum system; Yog tias koj "saib" ntawm lawv, lossis cuam tshuam rau txhua txoj kev, koj "tsoo" cov yam ntxwv ntawm quaritum.