Ukusasazwa kwezitshixo zeQuantum (QKD) yindlela ekhuselekileyo yonxibelelwano esebenzisa iprotocol ye-cryptographic equka izinto ze-quantum mechanics. Ivumela amaqela amabini ukuba avelise isitshixo esiyimfihlo esabelwana ngaso esaziwa ngabo kuphela, esinokusetyenziselwa ukubethela nokutyhila imiyalezo. Idla ngokubizwa ngokungachanekanga ngokuba yi-quantum cryptography, njengoko ingumzekelo owaziwayo womsebenzi we-quantum cryptographic.
Nangona zifumaneka kurhwebo kangangeminyaka emininzi, inkqubela phambili iyaqhubeka ekwenzeni ezi nkqubo zibe ncinci ngakumbi, zingabizi kakhulu, kwaye zikwazi ukusebenza kumgama omde. Zonke ezi zinto zibalulekile ekusetyenzisweni kwezi teknoloji ngoorhulumente kunye namashishini. Ukuhlanganiswa kwezi nkqubo ze-QKD kwiziseko zophuhliso zenethiwekhi ezikhoyo ngumceli mngeni okhoyo kwaye amaqela ahlukeneyo abavelisi bezixhobo zonxibelelwano, ababoneleli beziseko zophuhliso ezibalulekileyo, abaqhubi benethiwekhi, ababoneleli bezixhobo ze-QKD, iingcali zokhuseleko lwedijithali kunye nososayensi, basebenza koku.
I-QKD ibonelela ngendlela yokusasaza nokwabelana ngezitshixo eziyimfihlo ezifunekayo kwiiprotokholi ze-cryptographic. Ukubaluleka apha kukuqinisekisa ukuba zihlala ziyimfihlo, oko kukuthi phakathi kwamaqela anxibelelanayo. Ukuze senze oku, sixhomekeke kwinto eyayikade ibonwa njengengxaki yeenkqubo ze-quantum; ukuba "uyazijonga", okanye uziphazamise nangayiphi na indlela, "uyaphula" iimpawu ze-quantum.