quantum computing first round
December 9, 2015, NASA and Google created a computer with quantum mechanism computing, and the computing speed can reach 100 million times that of ordinary computers. Of course, it is just a computer targeting specific algorithms. In particular applications, it is not universal than traditional computers.
In quantum computing, there are mainly two solutions: superconducting and semiconductor.
China chose the semiconductor solution. University of Science and Technology of China Du Jiangfeng's research group proposed a possible feasible quantum computer principle , but it is still far from the real manufacturing of computers that use this principle.
The second round of quantum computing
August 9, 2016, MIT A new prototype chip can imprison ions in an electric field and direct lasers to each ion using built-in optics.
August 11, 2016, the Key Laboratory of Quantum Information of the Chinese Academy of Sciences led by Academician Guo Guangcan successfully developed the semiconductor quantum chip . Although it can only work in low-temperature auxiliary equipment with magnetic fields, it is also a breakthrough progress in the research of quantum computer in my country.
Controversy in the field of quantum communication
1. The development history of quantum communication in the United States
1984, the United States and Canada first proposed the BB84 solution, marking the birth of the field of quantum communication.
In 1992, Bennett from the United States first demonstrated the distribution of quantum keys experimentally for the first time.
1994, the US Department of Defense was committed to comprehensively promoting quantum communication technology.
995, the Institute of Physics, Chinese Academy of Sciences implemented the quantum communication demonstration experiment based on BB84 protocol for the first time in China (11 years have passed since the United States proposed the BB84 protocol).
In 1999, the United States achieved 500 meters of free space transmission.
In 2000, the Institute of Physics, Chinese Academy of Sciences completed the all-fiber QKD experimental system (quantum key distribution).
001, Pan Jianwei was selected as the " Chinese Academy of Sciences Introduction of outstanding foreign talents" and established the Quantum Physics and Quantum Information Laboratory in of the University of Science and Technology of China.
2003, the U.S. Department of Defense Advanced Research Program led the construction of the DARPA quantum communication technology test network.
In 2003, China implemented the first successful experiment of entangled state purification and quantum repeater; it successfully realized the first time that free quantum state stealth transmission was successfully achieved.
In 2004, the United States officially invested in the world's first quantum cryptographic communication network.
In 2005, Professor Guo Guangcan's team of University of Science and Technology of China implemented an optical fiber QKD communication system experiment with a communication distance of 125 kilometers between Beijing and Tianjin, which made my country make a major breakthrough in the practical use of quantum communication.
In 2006, the United States realized the transmission of data using quantum password encryption technology through ordinary optical fiber , and the network transmission is about 10 kilometers.
In 2007, Pan Jianwei's team implemented the deception QKD experiment, with the communication distance exceeding 100 kilometers.
In 2009, the United States allowed two independent atoms in an ion trap one meter apart to realize quantum entanglement and long-distance quantum communication.
In 2009, the US government issued a white paper requiring all scientific research institutions to coordinate the research on quantum information technology .
In 2009, Pan Jianwei's team expanded the communication distance of the QKD experiment to 200 kilometers.
In 2009, the Guo Guangcan team of the University of Science and Technology of China established Anhui Wentian Quantum Technology Co., Ltd. in Wuhu City, Anhui, and undertaken the "Quantum Government Affairs Network". Wentian Quantum is the first high-tech enterprise in my country to engage in the industrialization of quantum information technology.
In 2009, the University of Science and Technology of China and Tsinghua University cooperated to expand the QKD system for transmission in free space to 16 kilometers.
In 2010, a national laboratory in the United States, conducted in-depth research on the short-range infrared single photon conversion of quantum sources, the cryptographic system of quantum LAN, and free space quantum cryptography.
In 2011, one of the Strategic Pioneer Science and Technology Special Projects of the Chinese Academy of Sciences, the quantum science experimental satellite was launched (this project was proposed 4 years earlier than the United States). Use built-in optics to guide the laser to each ion. On August 11, 2016, the Key Laboratory of Quantum Information of the Chinese Academy of Sciences led by Academician Guo Guangcan successfully developed semiconductor quantum chips. Although they can only work in low-temperature auxiliary equipment with magnetic fields, it is also a breakthrough in my country's quantum computer research.
In 2012, based on the scientific research results of Pan Jianwei's group, the world's largest 46-node quantum communication test network was built in Hefei, Anhui City, marking that a key breakthrough has been made in large-capacity quantum communication network technology.
In 2013, an independent research organization in the United States announced the backbone network project of Quantum Communication in the United States, which plans to provide quantum security services for communication between data centers of Internet giants such as Google, Microsoft , Amazon .
In 2014, the research team of the University of Science and Technology of China expanded the safe distance of the remote quantum key distribution system to 200 kilometers, increasing the code rate by 3 orders of magnitude, and setting a world record.
In 2014, the world's first quantum information confidentiality trunk line - the " Beijing-Shanghai trunk line " quantum communication project started construction.
In 2015, NASA plans to establish a long-distance fiber-optic quantum communication trunk between its headquarters and jet propulsion laboratory . The trunk line is 600 kilometers in a straight line, the fiber-optic skin is 1,000 kilometers long, has 10 transit base stations, and plans to star-ground quantum communication.
In November 2015, China had deployed a number of major scientific and technological projects that reflect the country's strategic intentions, and quantum communication ranked second, second only to aircraft engines.
In August 2016, China's first quantum science experimental satellite, Mozi, was successfully launched.
United States Quantum information field has started early, has strong forward-looking, has a deep foundation, and is leading China in basic research. China started late and developed rapidly, achieving a breakthrough in "point". Judging from the implementation and application of quantum communication technology, China's quantum communication surpasses the United States.
