China's first quantum satellite "Micius" completed the three major scientific goals of high-speed quantum key distribution between satellites and the ground, quantum entanglement distribution, and ground-to-satellite quantum teleportation experiments in less than a year, which were originally scheduled to be completed in two years. Scientists have formulated a follow-up expansion experiment plan to further explore the research and application of quantum communication technology, and plan to launch several quantum satellites to build a global quantum communication network. Let's follow the mobile phone portable editor to learn about the relevant content.
Pan Jianwei, chief scientist of the quantum satellite and academician of the Chinese Academy of Sciences, said that his team will work with the European quantum communication team to carry out intercontinental quantum key distribution. The docking test with the Graz ground station in Austria has been successfully completed, and the quantum key distribution experiment is being carried out. By the end of August, the conditions for intercontinental quantum confidential calls will be met.
China will carry out intercontinental quantum key distribution with Europe (Photo provided by the Chinese Academy of Sciences)
Pan Jianwei said that China is also planning to cooperate with Germany, Italy and other countries in intercontinental quantum key distribution. The ground stations in Germany and Italy are expected to be ready to carry out relevant experiments by the end of 2017. This shows that the "Mozi" can not only connect with Chinese equipment, but also with equipment that meets the requirements in other countries in the world.
In addition, the research team will also strive to achieve secure information transmission that integrates quantum communication and classical optical communication, connect with users in need, and carry out practical applications of quantum communication.
Pan Jianwei said that the current space-to-earth quantum key distribution achieved by "Mozi" has a prerequisite, that is, "Mozi" must be reliable, because the key is sent by "Mozi". If "Mozi" leaks the key, then the entire process will be unsafe.
He said that the next step for the research team is to carry out experiments on long-distance quantum key distribution based on quantum entanglement. Once successful, it will finally realize the "holy grail" dreamed of by all cryptographers. He hopes that this work can be completed this year.
Chinese scientists will next carry out long-distance quantum key distribution based on entanglement (Photo courtesy of the Chinese Academy of Sciences)
In the longer term, Chinese scientists aim to build a global quantum communications network.
Wang Jianyu, executive deputy chief engineer of the quantum satellite project and satellite commander, said that a single low-orbit satellite cannot directly cover the entire world. At present, the time for the "Mozi" to conduct experiments in one transit is about 10 minutes. If the satellite is in an orbit of 10,000 kilometers, the time for sending keys can last for several hours. If the satellite is in an orbit of 36,000 kilometers, one-third of the earth can always see the satellite, and these places can communicate confidentially at any time. So in theory, three high-orbit satellites can cover the entire world.
"So 'Mozi' is just a starting point. From a practical point of view, we must build a quantum constellation consisting of high, medium and low orbit satellites to establish a quantum communication network covering the world," said Wang Jianyu.
"Micius" carries out quantum key distribution (Photo provided by the Chinese Academy of Sciences)
However, at present, the quantum key transmission of "Mozi" can only be carried out in the shadow area, that is, in the dark night without interference from sunlight. "We need to master the technology of quantum communication all day long and obtain quantum communication capabilities under higher attenuation channels. This is the path we must take to achieve global quantum secure communication in the next step." said Peng Chengzhi, chief designer of the quantum satellite scientific application system and deputy chief designer of the satellite system.
Recently, scientists such as Pan Jianwei and Peng Chengzhi have made a breakthrough in ground experiments, successfully realizing the first long-distance (53 kilometers) free-space quantum key distribution in daylight. This breakthrough verifies the feasibility of quantum key distribution between satellites and between satellites and the ground under daylight conditions, and clears a key technical obstacle for the construction of quantum satellite-based satellite-to-ground and intersatellite quantum communication networks in the future.
On November 28, 2016, at the Xinglong Observatory in Hebei Province, the "Mozi" quantum science experimental satellite passed by and researchers were conducting experiments. (Composite photo). Photo by Xinhua News Agency reporter Jin Liwang "This proves that it is feasible to build a satellite network to break through the limitation of the earth's shadow area. Next, we will further carry out related work in this direction." Pan Jianwei said.
He said: "We hope that through about 10 years of efforts, we will eventually be able to build a complete air-ground integrated wide-area quantum communication network system, which will be widely used in defense, government affairs, finance, energy and other fields, and seamlessly connected with classical communication networks, promoting the formation of strategic emerging industries with international leading position and the next generation of national information security ecosystem. We also hope to further explore the verification of basic principles of physics such as general relativity and quantum gravity."
"If the country supports the launch of multiple quantum communication satellites, there is hope that a global wide-area quantum communication network can be built by around 2030," said Pan Jianwei.
The above is an introduction to the portable mobile phone - Chinese scientists plan to use the "Mozi" to build a "quantum constellation". If you want to know more related information, please pay more attention to eeworld. eeworld Electronic Engineering will provide you with more complete, detailed and updated information.
Previous article:Do you just throw away your old mobile phone? This is how you should deal with electronic products
Next article:Google develops 'napping' skill for DeepMind AI
- Popular Resources
- Popular amplifiers
- Apple faces class action lawsuit from 40 million UK iCloud users, faces $27.6 billion in claims
- Apple and Samsung reportedly failed to develop ultra-thin high-density batteries, iPhone 17 Air and Galaxy S25 Slim phones became thicker
- Micron will appear at the 2024 CIIE, continue to deepen its presence in the Chinese market and lead sustainable development
- Qorvo: Innovative technologies lead the next generation of mobile industry
- BOE exclusively supplies Nubia and Red Magic flagship new products with a new generation of under-screen display technology, leading the industry into the era of true full-screen
- OPPO and Hong Kong Polytechnic University renew cooperation to upgrade innovation research center and expand new boundaries of AI imaging
- Gurman: Vision Pro will upgrade the chip, Apple is also considering launching glasses connected to the iPhone
- OnePlus 13 officially released: the first flagship of the new decade is "Super Pro in every aspect"
- Goodix Technology helps iQOO 13 create a new flagship experience for e-sports performance
- LED chemical incompatibility test to see which chemicals LEDs can be used with
- Application of ARM9 hardware coprocessor on WinCE embedded motherboard
- What are the key points for selecting rotor flowmeter?
- LM317 high power charger circuit
- A brief analysis of Embest's application and development of embedded medical devices
- Single-phase RC protection circuit
- stm32 PVD programmable voltage monitor
- Introduction and measurement of edge trigger and level trigger of 51 single chip microcomputer
- Improved design of Linux system software shell protection technology
- What to do if the ABB robot protection device stops
- Keysight Technologies Helps Samsung Electronics Successfully Validate FiRa® 2.0 Safe Distance Measurement Test Case
- Innovation is not limited to Meizhi, Welling will appear at the 2024 China Home Appliance Technology Conference
- Innovation is not limited to Meizhi, Welling will appear at the 2024 China Home Appliance Technology Conference
- Huawei's Strategic Department Director Gai Gang: The cumulative installed base of open source Euler operating system exceeds 10 million sets
- Download from the Internet--ARM Getting Started Notes
- Learn ARM development(22)
- Learn ARM development(21)
- Learn ARM development(20)
- Learn ARM development(19)
- Learn ARM development(14)
- Burning image and mounting USB disk with busybox file system failed
- Switching Circuit
- EEWORLD University Hall----Open Source PWM Robotic Arm (Version 51)
- MakeCode Extension for the LSM6DSO Sensor
- PCB reliability test
- It is rare for home appliance manufacturers to issue price increase letters, simply because of rising costs of chips and other items!
- The project in Xinlinx SDK is working fine but suddenly can't find the header file
- How should we say the "positive and negative poles" of alternating current?
- Ghost video sound
- Wire Harness Tester Related Operation & Application Video (Continuously Updated)