Quantum communication technology breakthrough for the first time to achieve quantum state stealth transmission
Quantum teleportation is an important means of communication that conveys quantum states. In a common sense, quantum information encoded in photons is transmitted remotely from one location to another. "People's Daily" reported on September 20 that a few days ago, Professors Jian Jianwei and Zhang Qiang of the University of Science and Technology of China cooperated with relevant units to realize the quantum invisibility between independent quantum sources pre-entangled and distributed on the Hefei Quantum Metro Communication Experiment Network for the first time. transmission. The research results were published online September 19 in the British journal Nature Photonics. Also published on the same day was the results of the quantum teleportation experiment of the Canadian research team. These two independent studies show that the quantum teleportation of inter-city networks is technically feasible, which lays a solid foundation for the construction of future scalable quantum networks. Zhang Qiang introduced that the existing quantum secure communication mainly encrypts and transmits classical information through quantum key. With the development of technology, the final quantum secure communication will realize the transmission of quantum information, and the quantum teleportation through optical fiber network is expected. Greatly improve the security and strength of Internet connections. However, the use of optical fiber networks for long-distance quantum teleportation requires independent light sources, and after long-distance transmission, the beams of the two sources do not differ, which becomes a technical challenge for quantum teleportation. Pan Jianwei (middle) and his team It is reported that Quantum TeleportaTIon, also known as quantum teleportation, quantum teleportation, quantum teleportation, quantum teleportation or quantum teleportation, is a method of using scattered quantum entanglement and some physical information (physical informaTIon). The technique of converting the position of a quantum state to an arbitrary distance. It is a new way of communication. It transmits no longer the classical information but the quantum information carried by the quantum state. With the help of quantum entanglement, the quantum state to be transmitted is like a "time-space transmission" described in science fiction, disappearing mysteriously in one place. It does not require any carrier to carry, but appears mysteriously in another place. It must be stated that quantum telemetry does not transmit any matter or energy. Such techniques are quite helpful in quantum information and quantum computing. However, this method cannot pass traditional information, so it cannot be used in communication with super-light speed. Quantum telemetry has nothing to do with the so-called instantaneous movements – quantum teleportation cannot convey the system itself, nor can it be used to arrange molecules to form objects at the other end. On December 11, 2015, Physics World, hosted by the British Physical Society, published ten major breakthroughs in the field of international physics in 2015. Professors Pan Jianwei and Lu Chaoyang of the University of Science and Technology of China used "multiple free metrics invisible." The research results of "Transportation" topped the list; Fang Zhong and Weng Hongming of the Institute of Physics of the Chinese Academy of Sciences were selected for their pioneering research by Fei Feimi. Quantum communication industry analysis Galaxy Securities believes that the quantum communication industry chain includes industrial applications, platform construction, infrastructure, and signal transceivers (lasers). We believe that the commercialization of quantum communication Beijing-Shanghai trunk line and the construction of many urban quantum communication metropolitan area networks will promote greater autonomy. The construction of the quantum communication network for intellectual property rights has been rolled out, and there are major investment opportunities in the industrial chain. After the completion of the Quantum Communication Beijing-Shanghai trunk line, the IDC field is a natural market for commercial applications of quantum secure communications. In 2015, ICBC has used quantum communication technology to realize the encrypted transmission of sensitive information in Beijing data center. In the future, IDC market will have more high security and high confidentiality requirements, and IDC based on quantum secure communication technology will become Lack of resources. The construction of quantum communication trunk is the premise of the commercial application of quantum security technology. In addition to the quantum communication Beijing-Shanghai trunk line and the quantum communication Hangzhou-Hangzhou trunk line, in the next 3-5 years, there will be more demand for construction and construction of quantum communication secret trunks in China, providing basic resources for various applications. Zhejiang Shenzhou Quantum Communication Technology Co., Ltd. is a company mainly engaged in the construction and operation of quantum communication trunk lines and websites, and is responsible for the research, design, construction and operation of Quantum Communication Shanghai-Hangzhou trunk line. 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