A few days ago, a small portable CPT atomic clock was developed by the China Aerospace Science and Industry Secondary Institute No. 203, which is based on a quantum frequency marker for coherent residential imprisonment. It is about half the size of a cigarette box. The core technical indicators have been better than those of similar foreign products. About 1 watt, is one-fifth of similar foreign products, punctuality accuracy of up to 1 microsecond per day.
The project has advanced technical solutions, is difficult to develop, is innovative, has complete independent intellectual property rights, and has broken through the key technologies of the CPT atomic clock quantum system and circuit control system, and proposed a set of light-wave antireflection atomic absorption gas chambers. Solved the technical problems of accurate filling and detection of germanium atoms and buffer gas, developed a highly efficient integrated quantum system, and achieved a high degree of harmonization of physical quantities such as heat, electricity, light, magnetism, quantum, and microwave, and completed CPT with independent intellectual property rights. The atomic clock precision servo control circuit solves the problem of CPT weak signal extraction and amplification, realizes accurate servo control of laser and microwave, etc. According to researcher Yang Renfu of 203 National Defense Key Laboratory, the scientific research results of this project have been successfully transformed and small batches are under way. Trial production.
CPT atomic clock is the only atomic clock that can realize miniaturization and miniaturization at present, and can realize long-term work of battery power supply. Portable atomic clock is widely used in autonomous navigation terminal equipment, long-distance precise timing and time synchronization, equipment measurement and control system and underwater navigation network. Its application prospects can produce significant economic and social benefits, and have important application value for strengthening China’s national defense capabilities and advancing national defense construction. For example: Portable CPT atomic clocks can ensure that terminals are used for a certain period of time when satellite navigation signals are rejected. In addition, it still has accurate navigation, positioning and timing capabilities. In addition, in the transportation network, power system, financial industry scheduling, monitoring, communications, etc., a large amount of data needs to be exchanged in real time. The portable CPT atomic clock can make existing communication network systems more Fast and efficient.