I-Quantum key distribution (QKD) yindlela yonxibelelwano ekhuselekileyo eyenza i-cryptographic protocol ebandakanya amacandelo e-quantum mechanics.Ivumela amaqela amabini ukuba avelise isitshixo esiyimfihlo ekwabelwana ngaso esaziwayo kuphela kubo, esinokuthi sisetyenziswe ukufihla kunye nokufihla imiyalezo. Idla ngokungalunganga ngokubizwa ngokuba yi-quantum cryptography, njengoko ingumzekelo owaziwa kakhulu we-quantum cryptographic task.
Ngelixa kukho urhwebo iminyaka emininzi, inkqubela iyaqhubeka ekwenzeni ezi nkqubo zihlangane, zingabizi mali ininzi, kwaye zikwazi ukusebenza kwimigama emide. Zonke ezi zinto zibaluleke kakhulu ekuthathweni kwezi teknoloji ngoorhulumente kunye namashishini. Ukudityaniswa kwezi nkqubo ze-QKD kwiziseko ezingundoqo zenethiwekhi ngumngeni okhoyo ngoku kunye namaqela ahlukeneyo abenzi bezixhobo zonxibelelwano, ababoneleli beziseko ezingundoqo ezibalulekileyo, abaqhubi benethiwekhi, ababoneleli bezixhobo ze-QKD, iingcali zokhuseleko lwedijithali kunye nososayensi, basebenza kule nto.
I-QKD ibonelela ngendlela yokusasaza kunye nokwabelana ngezitshixo eziyimfihlo eziyimfuneko kwiiprothokholi ze-cryptographic. Ukubaluleka apha kukuqinisekisa ukuba zihlala ziyimfihlo, okt phakathi kwamaqela anxibelelanayo. Ukwenza oku, sithembele kwinto eyayikhe yabonwa njengengxaki yeenkqubo ze-quantum; ukuba "ujonge" kubo, okanye uphazamise nayiphi na indlela, "uyaphula" iimpawu ze-quantum.