Articles tagged with Interferometry
Researchers used the CHARA Array to image two stellar explosions, Nova V1674 Herculis and Nova V1405 Cassiopeiae, providing direct evidence of multiple outflows and delayed expulsion. The images reveal unprecedented complexity in novae, with dramatic delays in ejection process.
Astronomers have successfully installed lasers on the eight-metre telescopes at Paranal, enabling the creation of an artificial star to correct atmospheric blur. This upgrade unlocks a greater observing power and wider sky coverage for the VLTI, allowing for deeper observations of faint targets.
Researchers at Max Planck Institute use AI to design novel interferometric gravitational wave detectors, discovering dozens of top-performing designs that surpass known human solutions. These findings have the potential to improve detectable signal range by over an order of magnitude.
Researchers at Harvard created a new type of interferometer that can modulate aspects of light in one compact package, enabling precise control over light's frequency and intensity. This breakthrough has the potential to be used in advanced nanophotonic sensors or on-chip quantum computing.
The University of Michigan Department of Astronomy will launch its first space mission in 2029 with a $10 million NASA grant. The STARI mission aims to demonstrate a new technique for studying exoplanets, which could help search for life beyond our solar system.
A new optical technology developed at UC Riverside enables gravitational-wave detectors to reach extreme laser powers, overcoming limitations that hinder the detection of cosmic phenomena. This breakthrough is expected to significantly expand our view of the universe, particularly in the earliest stages of its history.
Scientists have imaged a star outside our galaxy for the first time, using ESO's Very Large Telescope Interferometer. The star, WOH G64, is a red supergiant in its last stages before becoming a supernova, and the image shows a unique egg-shaped cocoon of gas and dust surrounding it.
A team of scientists has proposed a high-precision measurement method for large-aperture optical elements, overcoming limitations of existing techniques. The new method uses laser differential confocal and interferometric techniques to measure multiple parameters with nanometer precision.
Researchers from Sandia National Laboratories have successfully miniaturized a motion sensor using silicon photonic microchip components, achieving unprecedented accuracy and reducing size by a thousand times. This breakthrough enables precise navigation even in GPS-denied areas, posing significant national security risks.
The TIFR team developed a method to measure the temporal shape of ultrashort laser pulses using spectral interferometry, enabling precise measurement of pulse profiles at different points across the beam. This breakthrough is essential for handling increasingly powerful lasers that emit pulses and can distort optical components.
Researchers at Kyoto University have developed a new method to reduce optical interference and measure the quantum coherence time of moiré excitons, which are electron-hole pairs confined in moiré interference fringes. This breakthrough enables the realization of quantum functionality in next-generation nano-semiconductors.
A protocol has been designed to harness the power of quantum sensors, allowing for fine-tuning of quantum systems to sense signals of interest. The framework uses a combination of qubits and bosonic oscillators to create sensors that are vastly more sensitive than traditional sensors.
Scientists have developed a method to simulate gravitational waves in the lab using cold atoms, a phenomenon similar to gravitational waves. This breakthrough allows for easier study and understanding of these cosmic waves, which are challenging to detect.
Researchers used interferometry to study biofilm growth and found that the contact angle with the substrate plays a key role in determining fitness. The team discovered that the shape of the biofilm's edge, which resembles a spherical cap, is influenced by this geometry.
Researchers used neutron beams to test the Leggett-Garg inequality, a formula that challenges macroscopic realism. The results show that classical explanations are not possible, confirming quantum theory's strange properties.
Researchers have built the most precise experiment yet to look for gravitational anomalies caused by dark energy, using a lattice atom interferometer that can hold atoms in place for up to 70 seconds. While no deviation from predicted theory was found, the improved precision opens up possibilities for probing gravity at the quantum level.
Researchers at the University of Vienna have successfully measured Earth's rotation using quantum entanglement, achieving a thousand-fold precision improvement. By exploiting the unique properties of entangled photons, they were able to detect the rotation signal with remarkable stability and accuracy.
Sean McWilliams' team will study stellar-mass and massive binary inspirals, improving modeling accuracy for the Laser Interferometer Space Antenna (LISA). The project aims to enhance the instrument's science mission by making necessary dramatic improvements in modeling accuracy.
Researchers have developed a new device that can determine photon pair properties in a single shot, improving precision and accuracy in quantum technologies. The metasurface-enabled multiport interferometer reduces size, weight, and power while increasing reliability.
Researchers developed a novel phase imaging technique using intensity correlation measurements that is immune to phase instability. This method can capture high-resolution images of transparent and optically thin samples, such as cell cultures, with improved accuracy.
Researchers on the International Space Station produced a quantum gas containing two types of atoms for the first time in space. This achievement enables studying quantum chemistry, which focuses on how different atoms interact and combine with each other.
Researchers at Shanghai Jiao Tong University have developed a new scattering matrix method that can sculpt light output with minimal optimization time. The method offers unparalleled nonlinear scattered light control, enabling high-resolution scanning microscopy and particle trapping through dense, scattering media.
Researchers have developed a new measurement technique that uses the Kramers-Kronig relation to untangle complex helical light patterns from camera intensity measurements. This allows for single-shot retrieval of orbital angular momentum spectrum information, accelerating and simplifying the process compared to conventional on-axis int...
A machine learning technique called PRIMO has been used to reconstruct a sharper image of the M87 black hole using Event Horizon Telescope (EHT) data. The new image reveals more detailed information about the bright accreting gas and a larger, darker central region.
Researchers propose using a constellation of space interferometers to map the flat and almost perfectly homogeneous background signal, detecting subtle fluctuations known as anisotropies. These fluctuations hold information on the distribution of gravitational wave sources on the largest cosmological scale.
A new technique called πNIRS can monitor brain blood flow non-invasively using a fast two-dimensional camera. This method improves upon previous techniques like iNIRS, enabling faster detection of changes in blood flow related to neuronal activity.
Researchers use novel interferometric technique to measure time delay between H2 and D2 isotopes, finding phase shift of nearly 3 attoseconds caused by nuclear motion. The study uses high harmonic generation and advanced theoretical modeling to validate the method.
Researchers from the University of Kassel developed an approach to extend the limits of interferometric topography measurements for optical resolution below small structures. Microsphere assistance enables fast and label-free imaging without requiring extensive sample preparation.
Researchers at Sandia Labs have successfully built a compact, rugged quantum inertial sensor that can guide vehicles without satellites. The device uses advanced materials and integrated photonic technologies to achieve high accuracy and miniaturization.
A team of researchers uses mirrors to gather more light and views of an object from different angles, allowing them to reconstruct a three-dimensional model of an atom cloud. This technique enables 'light-field imaging', capturing not just intensity but also direction of light rays.
A team of scientists has successfully created a neutron interferometer using two separate crystals, enabling new possibilities for quantum measurements. This breakthrough opens up the possibility of expanding the size of the system while maintaining precision.
A team of scientists has successfully built a neutron interferometer using two separate crystals, a major breakthrough in quantum physics. This achievement opens up new possibilities for quantum measurements and research on quantum effects in a gravitational field.
The study compares the behavior of flat (1D), cylindrical (2D) and spherical (3D) micromirrors for free-space light coupling. Silicon micromirrors were fabricated and used to experimentally validate the coupling efficiency in visible and near infrared wavelengths.
Researchers from Politecnico di Milano have developed a programmable photonic processor that can separate and distinguish optical beams even if they are superimposed. This device allows for high-capacity wireless communication, with transmission rates of over 5000 GHz.
Researchers at the University of Innsbruck developed a new technique to track levitated nanoparticles with improved precision. By using the reflected light of a mirror, they outperformed state-of-the-art detection methods and opened up new possibilities for nanoparticle-based sensing applications.
Researchers have discovered a new application of holographic interferometry, enabling the measurement of real-time vibrations on reflective surfaces. This technique has significant implications for industries such as aviation, where it can help prevent engine failure and improve overall efficiency.
New research develops a low-index BaF2 thin film-based microspectrometer technology for LWIR spectral sensing. The study demonstrates the use of flat and stress-free free-standing distributed Bragg reflectors (DBRs) for high-performance wavelength discrimination in the long-wave infrared region.
The system uses multiple satellites to form an aperture-synthetic interferometer, meeting four key demands: high spatial resolution, contrast, sensitivity, and wide spectral range. Numerical simulations validate the method's efficiency, with reduced transfer times and stable orbit maintenance.
Researchers have developed miniaturized reflectors that enlarge the uses of remote infrared spectroscopy, allowing for field-ready devices with minimal size, weight, and power requirements. The devices utilize Ge-BaF2 thin films for surface micromachined mid-wave and long-wave infrared reflectors.
Researchers developed a new technique called dual-detection impulsive vibrational spectroscopy (DIVS) to measure two distinct types of vibrational signals. DIVS enables synchronous measurement of THz- and fingerprint region vibrations, offering high temporal resolution for real-time chemical analysis.
Researchers from the University of Birmingham have successfully used a quantum gravity gradiometer to detect an object hidden below ground, marking a significant milestone in the development of this technology. The breakthrough could lead to faster, cheaper, and more comprehensive underground mapping, with potential applications in ind...
Researchers suggest LISA can detect scalar fields interacting with gravity, providing strong bounds on theories beyond General Relativity. Extreme Mass Ratio Inspirals offer a unique probe of the strong-field regime of gravity.
The detection of high-frequency gravitational waves would offer insights into the early Universe's phases, inaccessible to electromagnetic wave investigations. Currently, technological challenges limit the sensitivity of proposed projects to six orders of magnitude lower.
A collaborative research project on quantum technology has started on the International Space Station (ISS), utilizing ultracold atoms to conduct fundamental research and develop future quantum sensors. The BECCAL experiment is a multi-user platform open to international scientists, allowing them to test their ideas in practice.
Researchers propose a method using optical cavities to enhance atom interferometers, enabling extreme momentum transfer for detecting dark matter and gravitational waves. This could facilitate breakthroughs in fundamental physics and future applications.
Researchers at the University of Rochester have developed a way to amplify interferometric signals without increasing extraneous input on an integrated photonic chip. This breakthrough enables high-precision measurements in various applications, including quantum gyroscopes.
Researchers from USTC successfully measured two laser sources of different wavelengths using a chromatic intensity interferometer, surpassing the diffraction limit by about 40 times. This breakthrough expands applications to diverse fields like astronomy and space remote sensing.
Researchers used a neutron beam to perform pendellösung interferometry on silicon, achieving the highest precision measurements to date. The technique provided insights into the crystal's mechanical and thermal properties, as well as the neutron's charge radius and short-range forces.
Researchers created an atom chip interferometer that can detect quantum gravity effects by studying interference patterns between atoms. The device has the potential to prove whether gravity is a quantum phenomenon.
A team of scientists has demonstrated atom interferometry on a sounding rocket, enabling precise measurements of gravity and potentially detecting gravitational waves. The success of this experiment marks a significant milestone in the field of quantum technologies.
Researchers used coda wave interferometry to determine the location of underground chemical explosions and characterize damage caused by an explosion. The technique can improve estimates of larger explosion locations and put a limit on damage extent.
A new system provides a practical method for measuring how breath travels when people talk or sing, which could inform the effectiveness of face masks and distancing requirements. The technique uses electronic speckle pattern interferometry to visualize temperature differences between exhaled breath and surrounding air.
Researchers developed an all-optical attosecond few slit interferometer to measure ultrafast processes in the time-energy domain. The technique uses laser-driven high order harmonics and introduces a perturbing field to alter harmonic generation, enabling wave-front controlled attosecond interferometry with precise energy resolution.
Researchers have developed a new method to detect anyons in fractional quantum Hall systems by binding impurity particles to them. This approach doesn't require particle exchange or interferometry and can be applied to various quantum simulators.
A team of astrophysicists observes newborn stars' magnetospheric accretion region for the first time, providing insight into star formation mechanisms. The study uses the Very Large Telescope Interferometer (VLTI) and GRAVITY instrument to measure angular size and prove magnetospheric accretion taking place close to stellar surfaces.
A novel mechanism for electron optics in two-dimensional solid-state systems has been introduced, allowing for the control of electrons at the scale of micrometers and nanometers. This breakthrough enables the engineering of quantum-optical phenomena in a variety of materials.
Researchers at MIT's LIGO Laboratory measure quantum noise affecting 40-kilogram mirrors, displacing them by 10-20 meters, a confirmed prediction by quantum mechanics. The team uses a novel instrument called a quantum squeezer to isolate and quantify the quantum effect.
The new mirrors use a bimetallic effect to create precise actuation, reducing light loss and increasing detection capabilities. The technology is useful for next-generation detectors and allows the detection of new sources of gravitational waves.
A new approach to atom interferometers allows for highly sensitive measurements of gravity and could be used in tests of general relativity. The trapped atom design greatly enhances sensitivity and precision over previous iterations, improving the signal-to-noise ratio by over 10,000-fold.
Researchers at PSI have developed a new method to precisely measure strong magnetic fields using polarized neutrons. This allows them to visualize and quantify inhomogeneous and anisotropic magnetic fields, with applications in alternators, MRI systems, and other devices.