Ikwirakwizwa rya Quantum (QKD) nuburyo bwitumanaho bwizewe bushyira mubikorwa protocole ya kriptografiya irimo ibice bigize ubukanishi bwa kwant.Bifasha amashyaka abiri kubyara urufunguzo rwibanga rusangiwe ruzwi gusa kuri bo, rushobora gukoreshwa muguhishira no gufungura ubutumwa. Bikunze kwitwa kwitwa kwifotoza, kuko nurugero ruzwi cyane rwumubare wimikorere.
Mugihe ubucuruzi bumaze imyaka myinshi butera imbere, iterambere rirakomeza mugukora sisitemu kurushaho, zihendutse, kandi zishobora gukora intera ndende. Ibi byose ni ingenzi cyane mu gukoresha ubwo buhanga na guverinoma n'inganda. Kwinjiza sisitemu ya QKD mubikorwa remezo bihari nibibazo byubu kandi amatsinda atandukanye yinganda zikoresha itumanaho, abatanga ibikorwa remezo bikomeye, abakora imiyoboro, abatanga ibikoresho bya QKD, inzobere mu bijyanye n’umutekano n’ikoranabuhanga, barimo gukora kuri ibi.
QKD itanga uburyo bwo gukwirakwiza no kugabana urufunguzo rwibanga rukenewe kuri progaramu ya cryptographic. Akamaro hano ni ukureba ko bakomeza kuba abikorera, ni ukuvuga hagati y’amashyaka ashyikirana. Kugirango ukore ibi, twishingikirije kubyahoze bigaragara nkikibazo cya sisitemu ya kwant; niba "ubareba", cyangwa ubahungabanya muburyo ubwo aribwo bwose, "ucamo" ibiranga kwant.