Researchers create powerful optical device with layered semiconductor and metasurface, enhancing nonlinear frequency conversion and enabling efficient light mixing and transformation. The device has potential applications in telecommunications, quantum communication, and photonic quantum computing.
Researchers have developed a highly efficient fiber-coupled single-photon source that generates photons directly inside an optical fiber, reducing transmission loss. This breakthrough enables the creation of secure quantum communication networks and paves the way for next-generation all-fiber-integrated quantum computing technologies.
The QROCODILE project has achieved record sensitivity in detecting light dark matter particles using superconducting detectors cooled to near absolute zero. The team set new world-leading limits on how dark matter interacts with ordinary matter, opening a door to future breakthroughs.
Researchers at Kyoto University have developed a new method to strengthen the brightness of single-photon light sources using magnetism. By introducing defects into a two-dimensional semiconductor, they were able to enhance the emission intensity even under weak magnetic fields.
Scientists at Rice University have developed a scalable method to create high-performance single-photon emitters in carbon-doped hexagonal boron nitride, paving the way for practical quantum light sources. The findings overcome long-standing challenges in the field and set a new benchmark for qubit production.
Research teams at USTC develop a tunable open optical microcavity to overcome the efficiency threshold of 2/3 for scalable linear optical quantum computing. The single-photon source achieves an efficiency of 71.2% and breaks through the loss-tolerant threshold.
A multi-institutional research team from Osaka University has discovered the origin of extremely bright color centers at an oxide/semiconductor interface. The study reveals a correlation between the luminescence of color centers and the density of electron traps, suggesting a specific carbon-related defect as the most promising candidate.
Researchers at Shanghai Jiao Tong University develop a novel method for broadband frequency conversion using X-cut thin film lithium niobate, achieving a bandwidth of up to 13 nanometers. This breakthrough enables on-chip tunable frequency conversion, opening the door to enhanced quantum light sources and larger capacity multiplexing.
Researchers developed a new 2D quantum sensing chip using hexagonal boron nitride that can simultaneously detect temperature anomalies and magnetic fields in any direction. The chip is significantly thinner than current quantum technology for magnetometry, enabling cheaper and more versatile sensors.
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.
A new study shines light on the properties of hexagonal boron nitride, a material used in electronic and photonics technologies. The research reveals fundamental energy excitation occurring at 285 millielectron volts, triggering single photons in harmonic electronic states.
Researchers from Hebrew University of Jerusalem have successfully integrated single-photon sources onto tiny chips at room temperature using a hybrid metal-dielectric bullseye antenna. This innovation enables efficient back-excitation and front coupling of emission to optical fibers or low numerical aperture optics, promising advanceme...
Researchers have developed a new method to guide light in a 2D configuration, enabling the creation of tiny photonic circuits and opening up new possibilities for technology. The innovation uses extremely thin glass crystals that can trap and carry light over long distances.
Researchers have developed a novel approach to generate highly directional single photons using a quantum emitter in a one-dimensional waveguide. This design improves extraction efficiency and reduces emission time uncertainty by exploiting the Purcell effect, offering a promising solution for quantum technologies.
Researchers have developed a method to stabilize the –1 state of boron vacancy defects in hBN, enabling it to replace diamond as a material for quantum sensing and quantum information processing. The team discovered unique properties of hBN and characterized its material, opening up new avenues for study.
Researchers demonstrated high-visibility quantum interference between two independent semiconductor quantum dots, an important step toward scalable quantum networks. The observed interference visibility is up to 93%, paving the way for solid-state quantum networks with distances over 300 km.
Researchers created silicon nanopillars using MacEtch, a wet etching technique that generates light particles at the right wavelength to proliferate in optical fibers. This breakthrough enables practical quantum communication via optical fibers.
Researchers review current research on 2D materials, highlighting their potential for quantum light sources and integrated circuits. The scientists also discuss recent advances in hybrid devices and scalable quantum photonic technologies.
Researchers at UMass Amherst developed a gear-shaped photonic crystal microring that increases light-matter interactions without sacrificing optical quality. The device boasts an optical quality factor 50 times better than previous records.
A Russian-U.K. research team has proposed a theoretical description for the new effect of quantum wave mixing involving classical and nonclassical states of microwave radiation. The study builds on earlier experiments on artificial atoms, which serve as qubits for quantum computers and probes fundamental laws of nature.
Researchers at MIPT and the University of Siegen have developed high-speed single-photon sources using diamond diodes, enabling efficient quantum communication and computing devices. The new design mechanism allows for precise photon emission times, crucial for applications such as quantum cryptography and quantum computing.
Researchers at Oak Ridge National Laboratory have developed a method to produce controlled, deterministic photons that can be used in novel cryptographic technologies. This innovation aims to improve the speed and security of quantum key encryption when sharing information over machine-to-machine networks.
Researchers have created highly efficient electrically-driven single-photon sources in diamond, promising breakthroughs in quantum computers and secure communication lines. The discovery enables operation at room temperature, increasing energy efficiency by over a thousand times and laying the foundations for novel quantum devices.
Researchers from Hebrew University of Jerusalem developed an efficient and compact single photon source that can operate on a chip at ambient temperatures. The device enhances the collection efficiency of single photons by more than a factor of 10 compared to a single nanocrystal without the antenna.
Researchers at NIST have developed a reliable source of single photons that can be manipulated into specific quantum states, addressing one of the key challenges to creating practical quantum computers. The team's design allows for the creation of multiple individual photons with distinct wavelengths from a single source.