Our transimpedance amplifier technology delivers exceptionally low noise, especially at high frequencies. Compared to other widely used detectors, ours deliver:
Our wide selection of standard, high-quantum-efficiency photodiodes makes precise quantum measurements both accurate and cost-effective.
With CMRR in excess of 60 dB, our balanced detectors stay shot-noise limited even with a noisy local oscillator — essential for clean homodyne detection.
Quantum Components designs and manufactures ultra-low-noise, high-quantum-efficiency balanced and single photodetectors purpose-built for quantum optics. If you are measuring squeezed light, running a homodyne detector, or pushing a measurement down to the shot-noise limit, our detectors are engineered to resolve quantum noise that general-purpose photoreceivers simply cannot.
Our transimpedance amplifier technology reaches a noise floor as low as 0.2 pA/√Hz — about 8 dB below comparable detectors — so shot noise sits well clear of the electronics.
Every photon counts when measuring squeezing. Standard photodiodes deliver QE > 92% across the visible and near-IR; custom diodes reach 99%, enough to measure more than 10 dB of squeezing.
A common-mode rejection ratio in excess of 60 dB keeps you shot-noise limited even with a noisy local oscillator — essential for clean homodyne and balanced detection.
Choose transimpedance gain from 50 Ω to 1 MΩ, with bandwidths from 12 MHz up to 1.2 GHz. Pick the photodiode for your wavelength; we build the detector around it.
Quantum-optics labs, squeezed-light and continuous-variable experiments, and metrology groups worldwide rely on detectors like these for measurements such as:
Tell us your wavelength and measurement, and we will recommend a standard model or quote a custom build. Most quotes go out within 1–2 business days.