Deep-Sea Quantum Communication Repeater DeepTransmit Successfully Tested in Mariana Trench: Quantum-Encrypted Transmission Achieved at 10,000 Meters Below Sea Level
The DeepTransmit quantum communication repeater, jointly developed by the Chinese Academy of Sciences' Institute of Deep-Sea Science and Engineering and Huawei, has successfully completed a quantum key distribution test at a depth of 10,900 meters in the Mariana Trench.
Deep-Sea Quantum Communication Repeater DeepTransmit Successfully Tested in Mariana Trench: Quantum-Encrypted Transmission Achieved at 10,000 Meters Below Sea Level
The DeepTransmit deep-sea quantum communication repeater, jointly developed by the Chinese Academy of Sciences' Institute of Deep-Sea Science and Engineering and Huawei HiSilicon, successfully completed a quantum key distribution test on June 8 at a depth of 10,900 meters in the Challenger Deep of the Mariana Trench. This marks the first time quantum communication technology has functioned reliably at extreme deep-sea depths.
DeepTransmit uses a high-pressure-resistant titanium alloy enclosure with an integrated micro quantum random number generator and single-photon detector. During the test, the repeater successfully established a quantum key distribution link with the surface support vessel, achieving a key generation rate of 1,200 bits per second with a bit error rate below 2.1%.
The technology provides a new encryption solution for deep-sea research stations, seabed mineral extraction, and deep-sea communication security.
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