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Chinese Journal of Space Science

Progress of the Quantum Experiment Science Satellite (QUESS) Micius Project

Jian-Wei Pan

Published Jan 1, 2018• 18 citations
Publisher

Abstract

By using satellites, ultra-long-distance quantum communication and tests of quantum foundations could be achieved at a global scale. The Quantum Experiment Science Satellite (QUESS) in China, also called Micius, one of the scientific satellite programs in the Strategic Priority Program on space science, the Chinese Academy of Sciences, was launched on 16 August 2016. There are totally 4 scientific payloads. We give a brief overview of the quantum experiment science satellite project and present most recent science results. The main scientific goal of the quantum experiment science satellite was achieved in 2017. Here, we introduce the latest achievements in satellite-based quantum communication and large-scale tests of quantum foundations obtained by Micius.

DOI
10.11728/cjss2018.05.604

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By using satellites, ultra-long-distance quantum communication and tests of quantum foundations could be achieved at a global scale. The Quantum Experiment Science Satellite (QUESS) in China, also called Micius, one of the scientific satellite programs in the Strategic Priority Program on space science, the Chinese Academy of Sciences, was launched on 16 August 2016. There are totally 4 scientific payloads. We give a brief overview of the quantum experiment science satellite project and present most recent science results. The main scientific goal of the quantum experiment science satellite was achieved in 2017. Here, we introduce the latest achievements in satellite-based quantum communication and large-scale tests of quantum foundations obtained by Micius.
The Micius satellite was successfully launched on 16 August 2016, from Jiuquan, China, orbiting at an altitude of about 500 km. The main scientific goals, including satellite-to-ground quantum key distribution, satellite-based quantum entanglement distribution, ground-to-satellite quantum teleportation, and satellite relayed intercontinental quantum network, were achieved in 2017. As a starting point, the Micius satellite has become a platform for quantum science experiments at the space scale. Here, we introduce the latest experimental achievements (in 2018-2020) based on the Micius satellite.
Quantum communication is proven to be the only unconditionally secure method for information exchange, which could well be the first commercial application of quantum information science. Compared with fiber-based demonstrations, free-space links could provide a more promising approach because photon loss and decoherence are almost negligible in the atmosphere. Furthermore, by using satellites, ultra-long-distance quantum communication and tests of quantum foundations could be achieved on a global scale. Here we report a serial of recent experimental progresses on free-space quantum communication over long distance in the Qinghai Lake area. In the meantime, besides the experimental efforts on the ground, Chinese Quantum Science Satellite has been launched on August 16th2016. And we will introduce the latest achievements in satellite-based quantum communication and large-scale tests of quantum foundations obtained through Micius.
Quantum Experiments at Space Scale (QUESS) mission is one of the scientific space science missions within the framework of the Strategic Pioneer Program on Space Science of the Chinese Academy of Science (CAS), is an international research project in the field of quantum physics.QUESS mission is designed to test and facilitate the quantum encryption and quantum teleportation technology through quantum optics experiment between space and ground.The two main scientific objectives of QUESS are to establish 'hack-proof' quantum communications by transmitting uncrackable keys from space to the ground and provide insights into the strangest phenomenon in quantum physicsquantum entanglement in space scale.In order to achieve the objectives, four experiments will be performed: quantum key distribute, entangled photon transmit, quantum teleportation and high rate coherent laser communication.Built by researchers at the Chinese Academy of Sciences, the quantum science experiment satellite will be the first to test the transfer of quantum information between space and ground.There are four main payloads on-board the satellite: a quantum key transceiver, an entanglement distribution transmitter, a space born entangled-photon source and an experimental control processor.Meanwhile， five telescope stations which are built at Xinglong, Nanshan, Delingha, Lijiang, and Ali, for performing the four experiments with the satellite.QUESS was launched in Aug.16, 2016.China Space Science Mission Center as one of 4 the composition of QUESS ground segments is responsible for the operation of the on-board payloads.The satellite, the ground segment, the basic processes, the mission preparation and the satellite commissioning are described in the paper.
The Micius satellite, launched from China in August 2016, is the first and only satellite dedicated entirely to quantum experiments. The ultralow loss transmission of photons on most of the path between ground and space enables quantum communication capabilities that are still far from being realized. This review details the commissioning of Micius as a full quantum communications system, and describes the achievement of global-scale quantum key distribution, entanglement distribution, and other fundamental studies, with this unique space-based system.
Quantum Science Satellite is one of the first five space science missions, slated for launch in the framework of Chinese Academy of Sciences (CAS) Strategic Priority Research Program on space science. The project aims to establish a space platform with long-distance satellite and ground quantum channel, and carry out a series of tests about fundamental quantum principles and protocols in space-based large scale. The satellite will be launched at Jiuquan and on orbit for 2 years. The orbit will be circular and Sun-synchronous with an altitude of 600km. It crosses the descending node at 00:00LT. The satellite is under early prototype development currently.
Quantum Science Satellite is one of the first five space science missions, slated for launch in the framework of Chinese Academy of Sciences(CAS) Strategic Priority Research Program on space science. The project aims to establish a space platform with long-distance satellite and ground quantum channel, and carry out a series of tests about fundamental quantum principles and protocols in space-based large scale. The satellite will be launched at Jiuquan and on orbit for 2 years. The orbit will be circular and Sun-synchronous with an altitude of 600 km. It crosses the descending node at 00:00 LT. The satellite is under early prototype development currently.