The world's first secure quantum communication line in China has passed technical inspection and is able to operate, according to the University of Science and Technology of China on Sept. 4. The secure quantum communication line spans more than 2,000 kilometers, linking the four cities of Beijing, Jinan, Hefei, and Shanghai. Construction of the line, approved by China's National Development and Reform Commission in July 2013, was completed late last year after 42 months of effort in overcoming technical difficulties to achieve quantum key distribution, technology of single photon detection, and reliable data transmission. Quantum communication is ultra-secure, as a quantum photon can neither be separated nor duplicated. Accordingly, it is impossible to wiretap, intercept, or crack the information it transmits. China has achieved many "firsts" in the field of quantum communication, such as the world's first secure quantum communication line connecting Beijing and Shanghai, and the first quantum communication satellite nicknamed "Micius". The success in building the line shows that China continues to lead the world in practical application and industrialization of quantum technology. material braceletswristband comflash drive wristbandcustom livestrong braceletsfidget spinner bracelet
TAIPEI - Typhoon Maria, the eighth typhoon of the year, has halted work and classes in Taiwan.The typhoon is forecast to bring strong winds and downpours to Taiwan from Tuesday night to Wednesday morning, local meteorological authorities said.As of 3 pm Tuesday, Maria was moving westerly and northwesterly in the waters off Yilan county at a speed of 30 km per hour. Authorities in Taitung county observed sea waves up to 7 meters high on Tuesday morning.Strong rain has hit the island as the typhoon approached, and strong gusts of wind are predicted in mountainous areas of Taipei.Meteorological authorities have issued warnings about downpours in areas including New Taipei city, Keelung, Taipei, Taoyuan, Yilan and Taichung.The typhoon also affected transportation, with trains halted and flights canceled.
