mbufe quantum mbụ site na ụgbọ elu gaa n'ụwa

Ndị nchọpụta German jisiri ike mee nnwale na ịnyefe ozi quantum site na ụgbọ elu gaa n'ala. Ha jiri ụkpụrụ akpọrọ BB84, nke na-eji photon polarized na-ebufe igodo quantum site na ụgbọ elu na-efe ihe fọrọ nke nta ka ọ bụrụ 300 km / h. A natara mgbama a n'ọdụ ụgbọ ala dị kilomita 20 site na ya.

A na-eme ndekọ dị ugbu a nke nnyefe nke ozi quantum site na photons n'ogologo na ogologo ogologo (144 km ruru n'oge mgbụsị akwụkwọ), mana n'etiti isi ihe dị n'ụwa. Isi nsogbu nke nkwurịta okwu quantum n'etiti ihe ndị na-akpụ akpụ bụ nkwụsi ike nke foton ndị polarịed. Iji belata mkpọtụ, ọ dị mkpa iji doziwanye ọnọdụ ikwu nke nnyefe na nnata.

A na-ebunye foton sitere na ụgbọ elu gaa n'ala na 145 bits kwa nkeji site na iji usoro nzikọrịta ozi ọkọlọtọ ọkọlọtọ gbanwere.