Resonator

Physicists measured how readily a current of electron pairs flows through "magic-angle" graphene, a major step toward understanding how this unusual material superconducts.

Putting two grapes, or a single grape almost cut in half, in a microwave creates a spectacular show.

The spectral degeneracies emerging as a consequence of parity-time (PT) symmetry exhibit a profound divergence from their conventional counterparts. They possess non-Hermitian nature and are designated as exceptional points (EPs), marking instances where the real and corresponding imaginary portions of specific eigenvalues align perfectly, alongside a coalescence of their associated eigenvectors.

The invention of optical frequency combs revolutionized frequency metrology and time-keeping. Miniaturization of such combs onto photonic chips, primarily leveraging the microresonator Kerr soliton frequency comb, expands on these functionalities by providing portable solutions to ultrafast spectroscopy, laser frequency synchronization, as well as stable optical, millimeter wave, and microwave frequency generation.

The same geometric quirk that lets visitors murmur messages around the circular dome of the whispering gallery at St. Paul's Cathedral in London or across St. Louis Union Station's whispering arch also enables the construction of high-resolution optical sensors. Whispering-gallery-mode (WGM) resonators have been used for decades to detect chemical signatures, DNA strands and even single molecules.

A new device uses a reflective cavity, a tiny bead and an electrode to create a laser beam of sound particles ten times more powerful and much narrower than other "phonon lasers"

Chip-based devices known as frequency combs, which measure the frequency of light waves with unparalleled precision, have revolutionized timekeeping, the detection of planets outside of our solar system and high-speed optical communication.

Early-stage technology has the potential to cut qubits needed for useful computers.

China has built the most powerful thermoacoustic Stirling generator. The prototype delivered a groundbreaking 102 kilowatts of power from a heat source of 530

Researchers have created chip-based photonic resonators that operate in the ultraviolet (UV) and visible regions of the spectrum and exhibit a record low UV light loss. The new resonators lay the groundwork for increasing the size, complexity and fidelity of UV photonic integrated circuit (PIC) design, which could enable new miniature chip-based devices for applications such as spectroscopic sensing, underwater…

They hope it can be used to facilitate data transfer for quantum computing.

Since the 1960s there has been plenty of evidence to support the existence of dark matter through astrophysical and cosmological observations, and at this point we're very confident that it exists. The question remains, though: what is dark matter actually made of?

"Convection within stars is similar to the process that fuels thunderstorms."

Quantum emission is pivotal to realizing photonic quantum technologies. Solid-state single photon emitters (SPEs), such as hexagonal boron nitride (hBN) defects, operate at room temperature. They are highly desirable due to their robustness and brightness.

The Mikiphone pocket phonograph was designed by Hungarian brothers Miklós and Étienne Vadász, and mass produced under licence by Masison Paillard of Saint Croix, Switzerland. Formed by a consortium of local watch makers in 1814, Paillard began making music boxes from about 1860. Just before the turn of the century, the company added cylinder … Continue reading "The 1924 Mikiphone Was The World's First Pocket Record…

Integrated photonics is making strides towards hosting an increasing range of functionalities on a chip. Examples include information processing and computation as well as optical sensing and ranging applications. This has spurred advances in integrated laser light sources, which are needed for photonic chips to become truly autonomous devices. Thus, on-chip isolation likewise becomes important for suppressing…

Scientists have hypothesized for over six decades the possibility of observing a form of wave reflections known as temporal, or time, reflections. Now, in a newly published paper in Nature Physics, researchers at the Advanced Science Research Center at the CUNY Graduate Center (CUNY ASRC) detail a breakthrough experiment in which they were able to observe time reflections of electromagnetic signals in a tailored…

Technical staff at the U.S. Department of Energy's Fermi National Accelerator Laboratory have completed a prototype of a special superconducting cryomodule, the first of its kind in the world. The national lab is home of the Proton Improvement Plan II, or PIP-II, a project to upgrade Fermilab's particle accelerator complex.

Hot gases composed of metal ions and electrons, called plasmas, are widely used in many manufacturing processes, chemical synthesis, and metal extraction from ores and welding. A collaborative research group from Tohoku University and the Toyohashi University of Technology has invented a new and efficient method to create metallic plasmas from solid metals under a strong magnetic field in a microwave resonator.…

A rapid and programmable amplitude modulator based on the thermo-optical effect has been demonstrated by integrating transparent microheaters with metasurfaces.