Chinese scientists make breakthrough in quantum computing technology
admin • July 4, 2018 • 13843
Lu Chaoyang, professor with University of Science and Technology of China, leading team on quantum bits research (Image grabbed from Reuters video)
Chinese scientists have successfully entangled 18 optical quantum bits, a key achievement that will dramatically promote quantum computing speed.
Entangling as many quantum bits as possible can lead to an exponential increase of quantum computing speed. However, scientists are facing a huge challenge to entangle a large amount of quantum bits.
A group of Chinese scientists for the first time entangled as many as 18 quantum bits by adopting a new technology called the multi-degrees of freedom photon control method.
“If I can control the three degrees of freedom of a photon, then it’s equivalent to triple it. The control of multi-degrees of freedom is another effective approach for us to further increase the number of the controllable quantum bits. We have adopted multiple approaches at the same time to achieve the large-amount quantum bits entanglement,” said Lu Chaoyang, professor with the University of Science and Technology of China.
Lu added that this achievement can be used in large-scale, high-efficiency quantum information technology, and can be regarded as a milestone in the technology’s development.
“Our next plan is to surpass the conventional computers using integrated circuits in human history, then surpass the fastest commercial computers of our times, and then surpass the supercomputers. This is our fundamental plan,” said Lu. — Reuters
China’s foreign ministry said on Thursday (July 2) that Britain would bear all consequences for any move it took to offer Hong Kong citizens a path to settlement in the UK.
China reserved the right to act against Britain over the issue, foreign ministry spokesman Zhao Lijian told a daily briefing, without specifying what countermeasures Beijing might take.
British Prime Minister Boris Johnson said on Wednesday (July 1) that China’s imposition of a security law on Hong Kong was a “clear and serious” violation of the 1984 Joint Declaration and that Britain would offer around 3 million residents of the former colony a path to British citizenship. (Reuters)
The United Kingdom said on Wednesday (July 1) that China’s imposition of a security law on Hong Kong was a “clear and serious” violation of the 1984 Joint Declaration and called on the People’s Republic to honor its international obligations.
“We have very carefully now assessed the contents of this national security legislation since it was published last night,” Foreign Secretary Dominic Raab told Reuters and the BBC.
“It constitutes a clear violation of the autonomy of Hong Kong, and a direct threat to the freedoms of its people, and therefore I’m afraid to say it is a clear and serious violation of the Joint Declaration treaty between the United Kingdom and China.”
Raab said he would set out shortly the action Britain would take with its international partners.
Hong Kong’s autonomy was guaranteed under the “one country, two systems” agreement enshrined in the Sino-British Joint Declaration signed by then Chinese Premier Zhao Ziyang and British Prime Minister Margaret Thatcher.
Hong Kong was handed back to China in 1997 after more than 150 years of British rule – imposed after Britain defeated China in the First Opium War. (Reuters)
(Production: Will Russell, Hanna Rantala, Polly Rider)
Hong Kong on Wednesday (July 1) held a flag-raising ceremony followed by a speech by Chief Executive Carrie Lam to mark the 23rd anniversary of the former British colony’s handover to Chinese rule, hours after new national security legislation took effect in the financial hub.
“The enactment of the national law is regarded as the most significant development in the relationship between the Central Authorities and the HKSAR since Hong Kong’s return to the Motherland”, the city’s embattled leader said the law was the most important development since the city’s return to Beijing in 1997.
Flanked by current and previous government officials, Lam also said the new law would only affect a small group of people in the Asian financial capital.
There was a heavy presence of law enforcement across the city as the ceremony was underway.
The contentious law will punish crimes of secession, subversion, terrorism and collusion with foreign forces with up to life in prison, heralding a more authoritarian era for China’s freest city.
Authorities in Beijing and Hong Kong have repeatedly said the legislation is aimed at a few “troublemakers” and will not affect rights and freedoms, nor investor interests. (Reuters)
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