Infrared Polarization-Encoding QKD Teaching System
Keywords:
Infrared Polarization-Encoding QKD Teaching System
Product Overview
The Infrared Quantum Key Distribution (QKD) Principle Teaching Device is a specialized instrument designed for quantum information education. Based on the BB84 protocol and employing polarization encoding, this teaching device features a series of experiments that are carefully crafted to reflect the workflow and key technologies of quantum key distribution protocols, thereby helping students enhance both their theoretical understanding and hands-on skills. The product’s components are individually packaged and can be freely combined, making it easy to operate and intuitively straightforward. It is widely suitable for science popularization and teaching in middle and higher education institutions.
Product Parameters
Overall machine technical specifications
| Serial number | Parameter Name | Performance parameters |
| 1 | Encoding method | Polarization coding |
| 2 | Protocol Type | BB84 protocol |
| 3 | Wavelength | 1550 ± 1 nm |
| 4 | Security key generation rate | ≥4 kbps at 0 km |
| 5 | Average bit error rate | ≤3% |
| 6 | Operating frequency | ≥5 MHz |
| 7 | Number of lasers | 4 of them |
| 8 | Number of optical modules | ≥12 units |
| 9 | Software Features | Supports laser trigger control, delayed scanning, QKD transmission, key output, and other functions. |
| 10 | Note | The extended version can be optionally equipped with the B92 protocol. |
Experimental Content
| Serial number | Experiment Name | Example of experimental results |
| 1 | 1. Beam splitter testing experiment; 2. Fixed Attenuator Testing Experiment; 3. Polarization Beam Splitter Test Experiment; 4. Polarization Controller Test Experiment; 5. Attenuator calibration test. |
|
| 2 | 1. Single-photon calibration; 2. Measurement of SPD detection efficiency; |
|
| 3 | 1. BB84 protocol experiment; 2. Quantum state preparation based on polarization-encoded QKD protocol; 3. Polarization decoding based on the polarization-encoded QKD protocol; |
|
| 4 | 1. Key distribution process data processing experiment; | |
| 5 | 1. System maximum transmission distance test experiment. |
Related Products
Quantum Cryptography Research Platform
QCRP (Quantum Cryptography Research Platform) is a quantum cryptography research platform dedicated to delivering high-speed signal driving and data processing capabilities.
The infrared single-photon detection module, as an important technology for detecting weak signals, finds extensive applications across numerous fields in physics, astronomy, chemistry, biology, medicine, and other disciplines.
1.25 GHz Infrared Single-Photon Detector
The WT-SPD320 infrared single-photon detector operates at a frequency as high as 1.25 GHz and uses an InGaAs/InP single-photon avalanche diode (SPAD) as its photosensitive element. It features an integrated multi-stage cooler and employs a sinusoidal gating mode. This detector boasts high integration, high detection efficiency, low dark count rate, and low afterpulse rate. It supports customizable frequency settings and single/dual-channel configurations. Moreover, the detector offers a wide range of user-friendly operational functions, including support for both internal and external clock triggering, synchronized clock output, and adjustable detection efficiency and dead time—all via an intuitive user interface and set of convenient interfaces.
Infrared single-photon detector
Single-photon detectors are instruments for detecting weak signals at the single-photon level, playing an indispensable role in numerous fields such as quantum optics, biophotonics, and laser ranging. In recent years, single-photon detectors have been widely used in the field of quantum cryptography and have become the core device for photoelectric conversion of quantum signals.
Message
If you have any suggestions, please leave a message or send us an email. We’ll reply to you as soon as possible after receiving your message or email.
Landline: +86-551-63637001
Tel: +86-13514953141
Address: No. 2800, Innovation Avenue, High-Tech Zone, Hefei City, Anhui Province, Innovation Industrial Park Phase II, E2-901/902
Quick Navigation
Online Message
If you have any product-related questions, feel free to contact us!