A team of researchers has demonstrated the ultimate sensitivity allowed by quantum physics in measuring the time delay between two photons. This breakthrough has significant implications for a range ...

Direct absorption spectroscopy is an absolute technique for measurement of atmospheric trace gases and aerosol extinction that has been traditionally limited in atmospheric science applications ...

Researchers in China propose and experimentally demonstrates a novel, deep learning-driven spectral recognition strategy, which achieves a wide dynamic measurement range beyond the free spectral range ...

Accurate measurements are central to virtually every scientific and engineering discipline. The process of designing any test setup and characterizing its performance can be broken down into a number ...