Gukwirakwiza urufunguzo rwa Quantum (QKD) ni uburyo bw'itumanaho bwizewe bushyira mu bikorwa protocole ya cryptographic ikubiyemo ibice bya quantum mechanics. Butuma impande ebyiri zikora urufunguzo rw'ibanga rusanzwe ruzwi na bo bonyine, rushobora gukoreshwa mu gupfundikira no gukuraho ubutumwa. Akenshi rwitwa quantum cryptography, kuko ari rwo rugero ruzwi cyane rw'akazi ka quantum cryptographic.
Nubwo imaze imyaka myinshi ikoreshwa mu bucuruzi, iterambere rirakomeje mu gutuma izi sisitemu ziba nto, zihendutse, kandi zishobora gukora intera ndende. Ibi byose ni ingenzi cyane kugira ngo za leta n'inganda bikoreshe izi koranabuhanga. Guhuza izi sisitemu za QKD mu bikorwa remezo by'imiyoboro y'itumanaho biriho ni cyo kibazo kirimo ubu kandi amatsinda y'abahanga mu nzego zitandukanye barimo abakora ibikoresho by'itumanaho, abatanga ibikorwa remezo by'ingenzi, abakora imiyoboro y'itumanaho, abatanga ibikoresho bya QKD, abakora mu by'umutekano w'ikoranabuhanga n'abahanga mu bya siyansi, barimo gukora kuri ibi.
QKD itanga uburyo bwo gukwirakwiza no gusangira imfunguzo z'ibanga zikenewe kuri protocole za cryptographic. Akamaro hano ni ukumenya ko ziguma ari ibanga, ni ukuvuga hagati y'abantu baganira. Kugira ngo tubigereho, twishingikiriza ku cyafatwaga nk'ikibazo cya sisitemu za quantum; iyo "uzirebye", cyangwa uzibangamiye mu buryo ubwo aribwo bwose, "uca" imiterere ya quantum.