Shot-Noise-Limited Balanced Homodyne Detector
Parsa Shot-Noise-Limited Balanced Homodyne Detector is the first Iranian fiber-based BHD delivering high-precision performance.
A Shot-Noise-Limited Balanced Homodyne Detector (BHD) is a highly sensitive optical measurement device used in quantum optics and precision metrology. It works by mixing a weak signal beam with a strong local oscillator on a beam splitter, then measuring the difference in intensity between two photodetectors. This technique enables the extraction of quantum noise properties, squeezing measurements, and weak signal detection beyond classical limits, making BHDs essential for applications in quantum communication and quantum computing.
Our Balanced Homodyne Detector is designed for optimal efficiency, featuring low electronic noise, high quantum efficiency photodetectors, and precise phase control. With a robust design tailored for stability and minimal loss, it provides superior performance for experiments requiring ultra-sensitive optical measurements. Whether for quantum state tomography or squeezed light detection, our BHD ensures accurate and reliable results.
Parsa Shot-Noise-Limited BHD is the first Iranian fiber-based BHD delivering high-precision performance.
| Detector Type | InGaAs Photodiodes |
| Working Wavelength | 950 – 1650 nm |
| Saturation Limit | < 70 µW |
| Damage Threshold Power | 4 mW |
| Typical Max Responsivity | 0.85 A/W |
| Frequency Range | DC – 150 MHz |
| Bandwidth (3 dB) | DC – 150 MHz |
| Rise Time | 2.3 ns |
| Common Mode Rejection Ratio (CMRR) | > 25 dB |
| Transimpedance Gain | Setting 1: 30 kV/A | Setting 2: 60 kV/A |
| Output Impedance | 50 Ω |
| Minimum NEP (?) | 5.2 pW/Hz1/2 (DC – 75 MHz) |
| Optical Inputs | FC/APC |
| Output Connector | SMA Female |
| RF Output Coupling | DC |
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