Interferometry is a measurement technique that exploits the superposition of coherent waves, typically electromagnetic or matter waves, to extract precise information from the resulting interference pattern. By splitting a wavefront into multiple paths that traverse different optical or physical conditions and then recombining them, interferometry enables highly sensitive determination of path length differences, refractive index variations, surface topography, displacements, and phase shifts. It underpins applications such as optical metrology, gravitational wave detection, astronomical aperture synthesis, and coherence characterization, with performance determined by factors including coherence length, phase stability, wavelength, and environmental noise control.
Scientists have introduced a form of quantum entanglement known as frequency-domain photon number-path entanglement. This advance in quantum physics involves an innovative tool called a frequency beam splitter, which has ...
Optics & Photonics
Apr 26, 2024
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An international collaboration of researchers, led by Philip Walther at University of Vienna, have achieved a significant breakthrough in quantum technology, with the successful demonstration of quantum interference among ...
Optics & Photonics
Apr 19, 2024
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In the realm of science and technology, harnessing coherent light sources in the deep ultraviolet (DUV) region holds immense significance across various applications such as lithography, defect inspection, metrology, and ...
Optics & Photonics
Apr 1, 2024
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393
An international team of researchers from Leibniz University Hannover (Germany) and the University of Strathclyde in Glasgow (United Kingdom) has disproved a previously held assumption about the impact of multiphoton components ...
Optics & Photonics
Jan 23, 2024
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107
Researchers at the University of Warsaw's Faculty of Physics with colleagues from Stanford University and Oklahoma State University have introduced a quantum-inspired phase-imaging method based on light intensity correlation ...
Optics & Photonics
Dec 27, 2023
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359
Femtosecond transient microscopy is an important tool to study ultrafast transport properties of excited states in solid-state samples. Most implementations are limited to photoexciting a single diffraction-limited spot at ...
Optics & Photonics
Dec 22, 2023
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22
Scientists at the Max Planck Institute for the Science of Light (MPL) and Max-Planck-Zentrum für Physik und Medizin (MPZPM) in Erlangen present a large step forward in the characterization of nanoparticles. They used a special ...
Bio & Medicine
May 9, 2022
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