China launches world’s first quan­tum satel­lite

China Daily (Canada) - - NEWS CAPSULE -

China suc­cess­fully launched the world’s first quan­tum satel­lite in the north­west­ern Gobi Desert on Tues­day.

In its two-year mis­sion, the satel­lite, Quan­tum Ex­per­i­ments at Space Scale (QUESS), is de­signed to es­tab­lish “hack-proof” quan­tum com­mu­ni­ca­tions by trans­mit­ting un­crack­able keys from space to the ground, and pro­vide in­sights into the strangest phe­nom­e­non in quan­tum physics — quan­tum en­tan­gle­ment.

Quan­tum com­mu­ni­ca­tion boasts ul­tra-high se­cu­rity as a quan­tum pho­ton can nei­ther be sep­a­rated nor du­pli­cated. It is hence im­pos­si­ble to wire­tap, in­ter­cept or crack the in­for­ma­tion trans­mit­ted through it.

The satel­lite will cir­cle the Earth once ev­ery 90 min­utes af­ter it en­ters a sun-syn­chro­nous or­bit at an al­ti­tude of 500 kilo­me­ters (310 miles).

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