Improved CPT atomic state resonance system

Abstract

The invention relates to the technical field of atomic state preparation and particularly relates to an improved CPT atomic state resonance system. The improved CPT atomic state resonance system comprises a microprocessor, a logic gate array, a servo loop and a quantum system, which are in communication connection with each other, the microprocessor is communication connection with a high stable crystal oscillator, the high stable crystal oscillator is in communication connection with a gain control module and a temperature control module, the microprocessor is communication connection with alinear polarization excitation module, the linear polarization excitation module is communication connection with the quantum system through a photocurrent modulation signal, and the quantum system isconnected with the servo loop through a quantum frequency identification signal. Compared with the prior art, the improved CPT atomic state resonance system provided by the invention has the beneficial effects that the improved CPT atomic resonance system can improve the utilization rate of atoms and improve the stability of the system.

Description

technical field [0001] The invention relates to the technical field of atomic state preparation, in particular to an improved CPT atomic state resonance system. Background technique [0002] At present, the atomic state preparation scheme of two-color circularly polarized light is used in the CPT resonance scheme of the CPT atomic clock. This technical scheme has a low utilization rate of atoms, because the optical pumping makes a large number of atoms accumulate in the hyperfine sub-level of the ground state. State, forming a polarized dark state phenomenon and cannot participate in the preparation of the CPT atomic state, which will affect the system signal-to-noise ratio of the CPT atomic clock, which is not conducive to the short-term stability of the system. In view of this, this patent proposes an improved CPT resonance solution to solve the above problems. Contents of the invention [0003] In order to solve the technical problems of atomic state preparation in...

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Problems solved by technology

[0002] At present, the atomic state preparation scheme of two-color circularly polarized light is used in the CPT resonance scheme of the CPT atomic clock. This technical scheme has a low utilization rate of atoms, because the optical pumping makes a large number of atoms accumulate in the hyperfine sub-level of the ground state. State, forming a polarized dark state phenomenon and cannot participate in the preparation of CPT atomic states, which will affect the system signal-to-noise ratio of the CPT atomic clock, which is not conducive to the short-term stability of the system

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