Related Experiment Video
Updated: Jan 1, 2026
07:24
Development of an Innovative LED-based Illumination Device for In Vitro Application of Photodynamic Therapy with Rose Bengal
Published on: September 12, 2025
398
Compact, low-threshold squeezed light source
Optics Express
|December 28, 2019
Summary
Researchers developed a compact, fiber-based squeezed light source for quantum applications. This novel setup achieves significant squeezing, paving the way for more accessible quantum technologies.
Area of Science:
- Quantum Optics
- Quantum Information Science
Background:
- Squeezed light is crucial for quantum metrology, communication, and computation.
- Current squeezed light sources are often bulky and complex, limiting their lab adoption.
Purpose of the Study:
- To develop a compact and high-performance squeezed light source.
- To integrate commercially available fiber components with a free-space parametric down-conversion source.
Main Methods:
- Utilized a free-space double-resonant parametric down-conversion source.
- Incorporated single-pass second-harmonic generation within a waveguide.
- Assembled the setup on a 30 cm x 45 cm breadboard.
Main Results:
- Achieved 9.3 dB of squeezing at a 5 MHz sideband frequency.
- Demonstrated a compact setup using fiber optics and free-space components.
Conclusions:
- The compact design represents a significant step towards practical squeezed light sources.
- Further optimization can lead to a turn-key system exceeding 10 dB squeezing.
Related Concept Videos
01:16Confocal Fluorescence Microscopy
19.8K
Confocal microscopy is an advanced microscopic technique. The prime advantage of the confocal microscope over other microscopy techniques is its ability to block the out-of-focus light from the illuminated samples using pinholes. It is widely used with fluorescence optics to obtain high-resolution, sharp contrast images. Unlike optical microscopes, confocal microscopes use a focused beam of light laser to scan the entire sample surface at different z-planes. These microscopes are, therefore,...
19.8K
02:16Light Acquisition
9.3K
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
9.3K