Researchers have created a new ultra-broadband electro-optic comb that packs 450 nm of light precision into a chip smaller than a coin, paving the way for smarter, more efficient photonic devices.

A team of researchers from the University of Ottawa has developed innovative methods to enhance frequency conversion of terahertz (THz) waves in graphene-based structures, unlocking new potential for faster, more efficient technologies in wireless communication and signal processing.

Researchers from Case Western Reserve University and the University of Illinois Urbana-Champaign have now discovered another interesting property in diamonds with added boron, known as boron-doped diamonds. Their findings could pave the way for new types of biomedical and quantum optical devices—faster, more efficient, and capable of processing information in ways that classical technologies cannot. Their results are published recently in Nature Communications.

Currently, the most efficient way to create photon pairs requires sending lightwaves through a crystal large enough to see without a microscope. In a paper published today in Nature Photonics, a team led by Columbia Engineering researchers and collaborators, describe a new method for creating these photon pairs that achieves higher performance on a much smaller device using less energy. P. James Schuck, associate professor of mechanical engineering at Columbia Engineering, helped lead the research team.

Researchers from the Max Planck Institute of Quantum Optics and Rice University have investigated the intricacies of particle exchange statistics and shown that a third category — paraparticles — can exist under specific physical conditions, obeying exotic "parastatistics" markedly different from those of fermions and bosons. Using a second quantization framework, they mathematically demonstrated that paraparticles emerge as quasiparticle excitations in quantum spin models, challenging long-standing assumptions in condensed matter and particle physics. Their discovery was published last week in Nature.

In a new study, researchers from the MCQST, the Max Planck Institute of Quantum Optics and the LMU under the lead of Timon Hilker demonstrated evidence of stripe formation, i.e. extended structures in the density pattern, in a cold-atom Fermi-Hubbard system. By using a quantum gas microscope and a special mixed-dimensional geometry, they were able to observe unique higher-order correlations in spin and charge densities related to those seen in some high-temperature superconducting materials.

Researchers have pioneered the use of parallel computing on graphics cards to simulate acoustic turbulence. This type of simulation, which previously required a supercomputer, can now be performed on a standard personal computer. The discovery will make weather forecasting models more accurate while enabling the use of turbulence theory in various fields of physics, such as astrophysics, to calculate the trajectories and propagation speeds of acoustic waves in the universe. The research, supported by a from the Russian Science Foundation (RSF), was in Physical Review Letters.

The Fraunhofer Institute for Applied Optics and Precision Engineering IOF is presenting a new photon source at SPIE Photonics West in San Francisco (January 28 to 30, 2025) that has been specially developed for the "Prepare-and-Measure" protocol of quantum communication. The components of the source are optimized for use in space.

The networked world is increasingly being shaken by digital sabotage, cyber attacks, malware and the like. Yet IT security is more important than ever these days. Networks based on quantum physics could significantly improve the security of relevant systems. So-called quantum repeaters form the basis for this. These devices have been the subject of intensive research for several years, but are not yet marketable. A new joint project, in which Paderborn University is involved, therefore aims to develop new concepts and demonstrate them on real test tracks outside the laboratory.

Quantum Computing Inc. (“QCi” or the “Company”), an innovative, integrated photonics and quantum optics technology company, today announced a collaboration with Sanders Tri-Institutional Therapeutics Discovery Institute, Inc. (Sanders TDI) to drive advancement of research in computational biomedicine. Through this collaboration, QCi will provide Sanders TDI with access to its quantum computation technology and hardware, specifically with its Dirac-3 Entropy Quantum Computing Machine, to support the Institute’s experimental work.