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Mid-infrared homodyne balanced detector for quantum light characterization
Optics Express
|May 14, 2021
Summary
We developed a new mid-infrared balanced homodyne detector. Our detector achieves shot-noise-limited performance, crucial for detecting non-classical light in quantum technologies.
Area of Science:
- Quantum optics
- Infrared spectroscopy
- Detector physics
Background:
- Detecting non-classical mid-infrared light is challenging.
- Quantum cascade lasers emit in the mid-infrared.
- High-performance detectors are needed for quantum applications.
Purpose of the Study:
- To characterize a novel balanced homodyne detector for mid-infrared applications.
- To assess the detector's performance for quantum technology.
Main Methods:
- Balanced homodyne detection in the mid-infrared.
- Intensity noise power spectral density analysis.
- Characterization of differential signal from incident radiation.
Main Results:
- The detector operates in the mid-infrared spectrum.
- The setup achieves shot-noise-limited performance.
- Demonstrated suitability for detecting non-classical light.
Conclusions:
- The novel detector is a high-performance system for mid-infrared quantum optics.
- Potential applications include free-space quantum communication.
- Enables advancements in mid-infrared quantum technologies.
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