Ukusabalalisa ukhiye we-Quantum (i-QKD) kuyindlela yokuxhumana evikelekile esebenzisa iphrothokholi eyimfihlo ehlanganisa izingxenye ze-quantum mechanics.Ivumela amaqembu amabili ukuthi akhiqize ukhiye oyimfihlo owabiwe ongahleliwe owaziwa yiwo kuphela, ongase usetshenziselwe ukubethela nokususa ukubethela imilayezo. Ivamise ukubizwa ngokungalungile ngokuthi i-quantum cryptography, njengoba iyisibonelo esaziwa kakhulu somsebenzi we-quantum cryptographic.
Nakuba kutholakala ukuhweba iminyaka eminingi, inqubekelaphambili iyaqhubeka ekwenzeni lezi zinhlelo zihlangane, zishibhile, futhi zikwazi ukusebenza amabanga amade. Konke lokhu kubalulekile ekuthathweni kwalobu buchwepheshe ngohulumeni nezimboni. Ukuhlanganiswa kwalezi zinhlelo ze-QKD kwingqalasizinda yenethiwekhi ekhona manje kuyinselelo yamanje kanye namaqembu ahlukahlukene abakhiqizi bemishini yezokuxhumana, abahlinzeki bengqalasizinda ebalulekile, abaqhubi benethiwekhi, abahlinzeki bemishini ye-QKD, ochwepheshe bezokuphepha bedijithali nososayensi, basebenza kulokhu.
I-QKD ihlinzeka ngendlela yokusabalalisa nokwabelana ngokhiye abayimfihlo abadingekayo kumaphrothokholi e-cryptographic. Okubalulekile lapha kusekuqinisekiseni ukuthi zihlala ziyimfihlo, okungukuthi phakathi kwezinhlangothi ezixhumanayo. Ukwenza lokhu, sithembele kulokho okwake kwabonwa njengenkinga yezinhlelo ze-quantum; uma "ubheka" kubo, noma ubaphazamisa nganoma iyiphi indlela, "uphula" izici ze-quantum.