Ukudluliselwa kokuqala kwe-quantum kusuka endizeni kuya emhlabeni
Abacwaningi baseJalimane bakwazile ukwenza ucwaningo ngokudluliswa kolwazi lwe-quantum kusuka endizeni kuya phansi. Basebenzise umthetho olandelwayo obizwa nge-BB84, esebenzisa ama-photon ahlukanisiwe ukudlulisa ukhiye we-quantum osuka endizeni endizayo cishe ngo-300 km/h. Isignali yamukelwe esiteshini esiphansi esiqhele ngamakhilomitha angama-20.
Ukuqoshwa okukhona kokudluliswa kolwazi lwe-quantum ngama-photon kwenziwa ibanga elide nelide (i-144 km yafinyelelwa ekwindla), kodwa phakathi kwamaphoyinti amisiwe emhlabeni. Inkinga eyinhloko yokuxhumana kwe-quantum phakathi kwamaphoyinti ahambayo ukuqiniswa kwama-photon polarized. Ukuze kuncishiswe umsindo, kwakudingeka futhi kuqiniswe indawo ehlobene yesithumeli nomamukeli.
Amafoto asuka endizeni eya phansi asakazwa ngamabhithi angu-145 ngomzuzwana kusetshenziswa uhlelo lokuxhumana lwe-laser oluguquliwe.
