Quantum Magnetic Precision Measurement Experimental System
Keywords:
Quantum Magnetic Precision Measurement Experimental System
Product Overview
The quantum magnetic precision measurement experimental system is a highly sensitive magnetic field measurement device that leverages the quantum properties of atoms. Its operating principle relies on the interaction between light and atoms (such as optical pumping and magnetic resonance) to detect weak magnetic field signals. At its core, the system exploits the modulation of atomic energy levels by magnetic fields (e.g., the Zeeman effect), and magnetic field measurements are achieved by using lasers to probe changes in the atomic spin states.
This product is specifically designed for senior undergraduate and graduate students in fields such as physics, optics, and electrical engineering. It adopts a blended teaching approach that combines “virtual simulation with physical experiments,” helping students systematically master quantum sensing technologies, atomic physics, and the principles of precision measurement, thereby enhancing their practical skills in the field of quantum technology and laying a solid foundation for future research and engineering applications.
Product Parameters
| Serial number | Parameter Name | Performance parameters |
| 1 | Pump source central wavelength | 894.6 ± 0.5 nm |
| 2 | Optical power | Minimum: 0.18 mW Typical: 0.23 mW |
| 3 | Detector responsivity | λ = 894.6 nm, typical value: 0.58 mA/mW |
| 4 | Cesium atomic cell | 5×5×5 mm³ |
| 5 | Operating temperature of the gas chamber | 80℃ |
| 6 | Scope of work | 100kHz-300kHz |
| 7 | Sensitivity at 0.1 Hz | 146pT |
| 8 | Sensitivity at 1 Hz | 285.7pT |
Standard configuration
| Serial number | Parameter Name | Performance parameters |
| 1 | Optical module | (1) Includes a pump light source, plano-convex lens, 1/4-wave plate, and polarizer. (2) Pump wavelength: 894.6 ± 0.5 nm |
| 2 | Electronics module | Includes 1 electronic master control module and 1 optoelectronic detector module: (1) Master control module: Includes laser wavelength locking and signal processing circuitry. (2) Optoelectronic detector: It detects changes in the laser intensity transmitted through the gas cell and converts the optical signal into an electrical signal. Atomic spin precession modulates the transmitted light intensity, generating a characteristic frequency signal that is correlated with the magnetic field. |
Experimental Content
| Serial number | Experiment Name | Laboratory class time |
| 1 | Optical Calibration of Polarization-Dependent Optical Components: 1. Polarizer calibration and verification of Malus’s law; 2.1/4-wave plate calibration; |
4 |
| 2 | System Test Optical Path Setup and Debugging: 1. Laser wavelength adjustment: 2. Optical path setup and debugging. |
4 |
| 3 | Magnetic field measurement: 1. Identify the FID signal; 2. Calculate the magnetic field value based on ω ≡ γB; |
4 |
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Address: No. 2800, Innovation Avenue, High-Tech Zone, Hefei City, Anhui Province, Innovation Industrial Park Phase II, E2-901/902
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