Spatial Polarization Coding QKD Teaching System
Keywords:
Spatial Polarization Coding QKD Teaching System
Product Overview
The spatial polarization-encoded QKD system is an experimental demonstration system developed to meet the educational needs of students majoring in quantum mechanics, physics, optical communications, and related fields. The system is based on the BB84 protocol and employs polarization encoding, enabling key distribution under both fiber-optic and free-space channel conditions while remaining compatible with the B92 protocol. This system adopts a modular design, with separate optical and electrical modules for the transmitter and receiver. It operates in the visible light spectrum, features visible optical path adjustments, offers a spacious operating environment, and supports demonstration experiments covering protocol procedures such as state preparation, transmission, demodulation, and detection.
Product Parameters
| Serial number | Parameter Name | Performance parameters |
| 1 | Encoding method | Polarization coding |
| 2 | Wavelength | 405 ± 5 nm |
| 3 | Operating frequency | 40MHz |
| 4 | Number of quantum lasers | 4 of them |
| 5 | Number of lasers | 4 of them |
| 6 | Raw key generation rate | ≥50 kbps @ 0 km |
| 7 | Average bit error rate | ≤5% |
| 8 | Fiber optic interface | FC/PC |
| 9 | Operating temperature | 15–35℃ |
| 10 | Power supply | 100–240 VAC |
| 11 | Power consumption | ≤130W |
Experimental Content
| Serial number | Experiment Name | Example of experimental results |
| 1 | 1. Experiment on testing the functional and performance parameters of conventional optical components; 2. Single-photon calibration and single-photon detection experiments; 3. Quantum state preparation and demodulation experiments based on polarization QKD protocols; 4. Polarization Basis Vector Calibration Experiment; 5. Data processing in the key distribution process. *Note: For any other experimental teaching needs, please contact sales. |
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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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