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Quantum micro-nano satellite technology is a key breakthrough in quantum communication towards global networking, the core of which is to achieve low-cost, high-efficiency integrated quantum key distribution (QKD) through satellite miniaturization and lightweight ground terminals. The following are technical points and progress:
1. Technology Breakthrough Highlights
1. Satellite miniaturization revolution
Weight and cost: The world's first quantum micro-nano satellite "Jinan 1" weighs only 98kg and has a quantum load of about 23kg. The weight and cost are reduced to about 1/6 of that of the traditional "Mozi" satellite, greatly reducing the threshold for launch and networking.
Light source performance: The emission frequency of the light source is increased by 6 times, and a single transit can generate a million-bit security key. The timeliness is 2-3 orders of magnitude higher than that of the "Mo Zi" and supports real-time satellite-to-ground communication.
2. Lightweight and movable ground station
The weight of the supporting ground station has been reduced from 13 tons to less than 100kg, and it can be transported and deployed by two people. The installation time has been shortened from several months to several hours, supporting the rapid deployment of urban roofs, plateaus, islands and other scenes.
Realize real-time key extraction with satellites, and increase the key generation rate to an average of 3kbps, meeting high-time encryption needs such as finance and government affairs.
3, ultra-long distance quantum communication verification
In March 2025, "Jinan 1" cooperated with South Africa to complete the world's first single-transit real-time QKD, establishing quantum keys at a distance of 12,900 kilometers, realizing "one -1 dense" encrypted transmission of image data, setting a new record for space quantum communication.
2. core technology advantages
Ability | Implementation path | Function |
Anti-hacker attack | Based on the principle of single-photon unclonable, measurement perturbation, interception is exposure. | Information theory can prove security to resist the threat of quantum computing. |
24/7 communication | Overcame the sun's interference technology and broke the night work limit. | Support global key distribution at any time |
Networking flexibility | Micro-nano satellite low-cost characteristics mobile ground station | Laying the Foundation for a Constellation Global Quantum Network |
3. Application Scenarios and Industrial Layout
Financial security: Shenzhen-Hong Kong financial line application verifies cross-border millisecond quantum encryption transmission, supporting high-frequency trading with zero risk.
Global Communications Network: China plans to launch 2-3 low/high orbit satellites to form a quantum constellation to build a quantum secure communication network covering the world.
Industry chain synergy: industry-university-research linkage to promote satellite manufacturing (China Satellite), quantum load (Guodun Quantum), ground system (Guorui Technology) and other core link technology landing.
3. Application Scenarios and Industrial Layout
Financial security: Shenzhen-Hong Kong financial line application verifies cross-border millisecond quantum encryption transmission, supporting high-frequency trading with zero risk.
Global Communications Network: China plans to launch 2-3 low/high orbit satellites to form a quantum constellation to build a quantum secure communication network covering the world.
Industry chain synergy: industry-university-research linkage to promote satellite manufacturing (China Satellite), quantum load (Guodun Quantum), ground system (Guorui Technology) and other core link technology landing.
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