China Daily (Canada) - - CHINA -

to read en­tries one by one.

“A quan­tum com­puter can solve prob­lems that have sep­til­lion (1 fol­lowed by 24 ze­ros) vari­ables in a mat­ter of sec­onds, while even to­day’s most pow­er­ful su­per­com­puter would take cen­turies,” Pan said.

How­ever, the cur­rent model only uses five pho­ton qubits — sub­atomic light par­ti­cles that store data — so its cal­cu­la­tion abil­ity is less than that of a mod­ern cell­phone. But Pan said with 50 qubits, which will be achieved by 2020, its speed in solv­ing these prob­lems could sur­pass the fastest su­per­com­puter.

By the end of this year, Pan said he will scale up his ma­chine to have 20 qubits, which would be more pow­er­ful in solv­ing com­plex prob­lems than the fastest lap­top on the market.

He also plans to open the ma­chine’s cloud com­put­ing plat­form to pub­lic use, ac­cord­ing to his team’s stud­ies, pub­lished on Tues­day in Na­ture Pho­ton­ics, an international sci­ence jour­nal.

Quan­tum com­put­ers, how­ever, will not re­place per­sonal desk­tops at home, Pan said. For sim­ple tasks like in­ter­net brows­ing, “the quan­tum com­puter’s power is mostly wasted and there­fore has no no­tice­able edge com­pared with al­ready highly ad­vanced PCs”, he said.

To­day’s most ad­vanced quan­tum com­put­ers use around five qubits, which may sound un­der­whelm­ing. But 100 qubits can do around 1.3 non­il­lion (1 fol­lowed by 30 ze­ros) cal­cu­la­tions — over 10 quadrillion times larger than the global GDP in 2014.

Quan­tum com­put­ers also use a frac­tion of the en­ergy that su­per­com­put­ers use be­cause only a few­dozen qub-

The Min­istry of Sci­ence and Tech­nol­ogy launches a project to cre­ate a quan­tum chip con­tain­ing three qubits (units of quan­tum in­for­ma­tion).

Chinese sci­en­tist Pan Jian­wei and his team be­comethe first in the world to solve lin­ear equa­tions us­ing quan­tum com­put­ers.

First gen­er­a­tion three-qubit quan­tum chip pro­to­type is born.

Google, NASA and Univer­sity of Cal­i­for­nia, Santa Bar­bara, an­nounce they had sta­bi­lized an ar­ray of nine-qubit en­tan­gle­ment in su­per­con­duct­ing quan­tum pro­ces­sors. (En­tan­gle­ment is when par­ti­cles are grouped in­ways that al­lowthem to in­flu­ence each other.) The sec­ond gen­er­a­tion of China’s its are re­quired to un­leash enor­mous com­put­ing pow­ers, Zhu said. In ad­di­tion, Chinese sci­en­tists have dis­cov­ered new, en­ergy ef­fi­cient ways to keep the com­puter at tem­per­a­tures needed to op­er­ate, fur­ther re­duc­ing costs.

Due to the po­ten­tial of quan­tum com­put­ing, the United States, the United King­dom and other Euro­pean na­tions are in a race for quan­tum supremacy.

High-tech com­pa­nies, such as IBM, Google, Mi­crosoft and In­tel, also are de­vel­op­ing quan­tum com­put­ers us­ing dif­fer­ent sub­atomic par­ti­cles, such as elec­tron­ics or su­per­con­duct­ing el­e­ments.

What makes China’s pho­ton quan­tum com­puter spe­cial is its re­sis­tance to three-qubit quan­tum chip is born.

China be­comes the first coun­try to achieve a 10-qubit en­tan­gle­ment in pho­tons. Third- and fourth- gen­er­a­tion quan­tum chips, con­tain­ing four and 10 qubits, re­spec­tively, are born. China cre­ates the­world’s first pho­ton quan­tum com­puter

Chinese sci­en­tists sta­bi­lize an ar­ray of 10-qubit en­tan­gle­ment in su­per­con­duct­ing quan­tum pro­ces­sors. They plan to scale up the pho­ton quan­tum com­puter to 20 qubits by year’s end.

China plans to com­plete a pho­ton quan­tum com­puter with 50 qubits, reach­ing global quan­tum supremacy. in­ter­fer­ence and abil­ity to scale up, said Lu Chaoyang, a quan­tum physi­cist at the Univer­sity of Sci­ence and Tech­nol­ogy of China.

“Un­like elec­trons or pro­tons found in other quan­tum com­put­ers, pho­tons do not gen­er­ally re­act with the en­vi­ron­ment, so pho­ton quan­tum com­put­ers are more sta­ble,” he said.

“China is also the world leader in op­tics tech­nol­ogy, so we have the re­sources and ex­per­tise to quickly in­crease the size of our com­put­ers.”

Apart from in­creas­ing the hard­ware, Chinese sci­en­tists also are de­vel­op­ing soft­ware and a new pro­gram­ming lan­guage to fully uti­lize the power of quan­tum com­put­ing, he added.

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