Sci­en­tists cre­ate first pho­ton quan­tum com­puter

China Daily (Canada) - - FRONT PAGE - By ZHANG ZHIHAO in Shang­hai zhangzhi­hao@ chi­nadaily.com.cn

China has cre­ated the world’s first pho­ton quan­tum com­puter, which is ex­pected by 2020 to work at speeds that eclipse the most pow­er­ful su­per­com­puter, sci­en­tists said.

The de­vice, called a boson­sam­pling ma­chine, is 10 to 100 times faster than elec­tronic and tran­sis­tor com­put­ers, which were de­vel­oped in the mid-20th cen­tury, and is 24,000 times faster than ex­per­i­men­tal quan­tum de­vices de­vel­oped in other coun­tries, said Pan Jian­wei, an aca­demi­cian at the Chinese Academy of Sci­ences and the lead­ing quan­tum physi­cist in­volved in build­ing the ma­chine.

One anal­ogy to ex­plain the speed of quan­tum com­put­ing is like be­ing able to read all the en­tries in a phone book at the same time, while con­ven­tional com­put­ers, even su­per­com­put­ers, have

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