Home
Latest images
Search
Register
Log in
AdminAdmin- Posts : 35
Join date : 2018-01-15 
Pan Jianwei Team Conducts Human First Intercontinental Quantum Communication
Fri Jan 19, 2018 10:14 pm
BBS unknown space station (Fri Jan 19 21:58:56 2018, the United States East)
Pan Jianwei team for human first intercontinental quantum communication, sent to Austria what?
The world's first quantum communications experimental satellite to complete the goal; the world's first quantum secure communication "Beijing-Shanghai trunk" opened; the world
First Intercontinental Quantum Communication ... In the past year, Pan Jianwei, University of Science and Technology of China led the "China Team" Speed came to the forefront of quantum communication.
On January 19, China University of Science and Technology disclosed more technical details of the first intercontinental quantum communication. Through the "Mo Zi "Relay, quantum confidential communications completed in China and Austria, 7,600 kilometers apart. Beijing sent a 5.34kB "Mozi" photo to Vienna, while Vienna sent a photo to Beijing Schrödinger photo with a size of 4.9kB, using one 80kbit quantum key for one-time encryption. This quantum secure communication was completed in cooperation with Dr. Pan Jianwei, mentor, and Prof. Anton Zeilinger, Olivet Academy of Sciences. Moons traveled to the Xinglong ground station near Beijing and the Graz ground station near Vienna Sub-entanglement distribution, with each of the two ground stations generate a key. Then, in accordance with the ground instructions, "Mexican number" to give Bitwise exclusive-or operation of two keys, sending the result to one of the ground stations, whereby the two Chinese and European distances up to A password is set between 7600 km. In addition, the Chinese Academy of Sciences and the Austrian Academy of Sciences conducted an intercontinental quantum confidential video conference, using 128 advanced Plus Close standard (refresh 128 bit seed key table per second). Video conferencing lasted 75 minutes, a total of about 2GB of data transmission, in The two sides exchanged a 560kbit quantum key. The traditional public-key cryptosystem relies on the computational difficulty of a particular mathematical function, but in theory it can be cracked. On the contrary, the amount Sub-key distribution is by far the only encryption method that has been strictly proven unconditionally secure. Communicator uses quantum superposition pair information Encryption, and based on quantum non-copyable principle, any eavesdropping behavior will cause interference to the entire communication system.
After more than a decade of experimental exploration, Pan Jianwei team will entangle the quantum distribution distance from a dozen kilometers to 404 kilometers, To achieve the world's most remote point-to-point fiber key distribution, to meet the needs of inter-city quantum communication. However, optical fiber or ground free space transmission loss, quantum communication distance is limited to hundreds of kilometers. In order to achieve Quantum communications between any two points on the earth, the use of "world link" is a viable option. Photons on the ground and the satellite Between the transmission, the vast majority of the distance is a vacuum, the loss generated and the degree of irreversibility can be neglected.
Pan Jianwei team in August 2016 will be the world's first quantum communication experiment satellite "Mo Zi" to send 500 km high near track. Five ground stations for cooperation experiments with "Mozi" have also been completed one after another, which are located in Xinglong, Hebei Province, Xinjiang Nanshan, Qinghai Delhi, Lijiang, Yunnan and Ali, Tibet.
In 2017, Pan Jianwei team announced that "Mozi" successfully completed three major scientific goals in one year: over 1,200 kilometers In the star-luring state quantum key distribution; distance of 1200 km of the earth's entangled quantum entanglement and Bell state measurements; Earth Quantum teleportation.
These three breakthrough experiments are the cornerstone of building a global quantum communication network. The results confirm that for 1200 km of quantum Key distribution, satellite link efficiency than optical fiber more than 20 orders of magnitude. Today, the ground "Beijing-Shanghai trunk line" and heaven's "Mozi" star link have been integrated. By the end of September 2017, The world's first quantum secure communications trunk - "Beijing-Shanghai trunk line" was officially opened, a total length of 2000 km, runs through Jinan and
Hefei. The booming ground station through optical fiber access to Beijing's multiple quantum communication network. Government agencies, banks and insurance The company is testing the backbone of quantum communication through practical applications.
Pan Jianwei team for human first intercontinental quantum communication, sent to Austria what?
The world's first quantum communications experimental satellite to complete the goal; the world's first quantum secure communication "Beijing-Shanghai trunk" opened; the world
First Intercontinental Quantum Communication ... In the past year, Pan Jianwei, University of Science and Technology of China led the "China Team" Speed came to the forefront of quantum communication.
On January 19, China University of Science and Technology disclosed more technical details of the first intercontinental quantum communication. Through the "Mo Zi "Relay, quantum confidential communications completed in China and Austria, 7,600 kilometers apart. Beijing sent a 5.34kB "Mozi" photo to Vienna, while Vienna sent a photo to Beijing Schrödinger photo with a size of 4.9kB, using one 80kbit quantum key for one-time encryption. This quantum secure communication was completed in cooperation with Dr. Pan Jianwei, mentor, and Prof. Anton Zeilinger, Olivet Academy of Sciences. Moons traveled to the Xinglong ground station near Beijing and the Graz ground station near Vienna Sub-entanglement distribution, with each of the two ground stations generate a key. Then, in accordance with the ground instructions, "Mexican number" to give Bitwise exclusive-or operation of two keys, sending the result to one of the ground stations, whereby the two Chinese and European distances up to A password is set between 7600 km. In addition, the Chinese Academy of Sciences and the Austrian Academy of Sciences conducted an intercontinental quantum confidential video conference, using 128 advanced Plus Close standard (refresh 128 bit seed key table per second). Video conferencing lasted 75 minutes, a total of about 2GB of data transmission, in The two sides exchanged a 560kbit quantum key. The traditional public-key cryptosystem relies on the computational difficulty of a particular mathematical function, but in theory it can be cracked. On the contrary, the amount Sub-key distribution is by far the only encryption method that has been strictly proven unconditionally secure. Communicator uses quantum superposition pair information Encryption, and based on quantum non-copyable principle, any eavesdropping behavior will cause interference to the entire communication system.
After more than a decade of experimental exploration, Pan Jianwei team will entangle the quantum distribution distance from a dozen kilometers to 404 kilometers, To achieve the world's most remote point-to-point fiber key distribution, to meet the needs of inter-city quantum communication. However, optical fiber or ground free space transmission loss, quantum communication distance is limited to hundreds of kilometers. In order to achieve Quantum communications between any two points on the earth, the use of "world link" is a viable option. Photons on the ground and the satellite Between the transmission, the vast majority of the distance is a vacuum, the loss generated and the degree of irreversibility can be neglected.
Pan Jianwei team in August 2016 will be the world's first quantum communication experiment satellite "Mo Zi" to send 500 km high near track. Five ground stations for cooperation experiments with "Mozi" have also been completed one after another, which are located in Xinglong, Hebei Province, Xinjiang Nanshan, Qinghai Delhi, Lijiang, Yunnan and Ali, Tibet.
In 2017, Pan Jianwei team announced that "Mozi" successfully completed three major scientific goals in one year: over 1,200 kilometers In the star-luring state quantum key distribution; distance of 1200 km of the earth's entangled quantum entanglement and Bell state measurements; Earth Quantum teleportation.
These three breakthrough experiments are the cornerstone of building a global quantum communication network. The results confirm that for 1200 km of quantum Key distribution, satellite link efficiency than optical fiber more than 20 orders of magnitude. Today, the ground "Beijing-Shanghai trunk line" and heaven's "Mozi" star link have been integrated. By the end of September 2017, The world's first quantum secure communications trunk - "Beijing-Shanghai trunk line" was officially opened, a total length of 2000 km, runs through Jinan and
Hefei. The booming ground station through optical fiber access to Beijing's multiple quantum communication network. Government agencies, banks and insurance The company is testing the backbone of quantum communication through practical applications.
Permissions in this forum:
You cannot reply to topics in this forum|
|
|