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Category: computing – Page 80

Graphene-based programmable surfaces advance terahertz imaging and 6G communications

Researchers at The University of Manchester’s National Graphene Institute have introduced a new class of reconfigurable intelligent surfaces capable of dynamically shaping terahertz (THz) and millimeter (mm) waves. Detailed in a paper published in Nature Communications, this breakthrough overcomes long-standing technological barriers and could pave the way for next-generation 6G wireless technologies and non-invasive imaging systems.

The breakthrough centers around an active spatial light modulator, a surface with more than 300,000 sub-wavelength pixels capable of manipulating THz light in both transmission and reflection.

Unlike previous modulators, which were limited to small-scale demonstrations, the Manchester team integrated graphene-based THz modulators with large-area thin-film transistor (TFT) arrays, enabling high-speed, programmable control over the amplitude and phase of THz light across expansive areas.

Scientists achieve breakthrough in harnessing heat to control magnetism in 2D materials

Pioneering new research could help unlock exciting new potential to create ultrafast, laser-driven storage devices. The study, led by experts from the University of Exeter, could revolutionize the field of data storage through the development of laser-driven magnetic domain memories.

The new research is based on creating a pivotal new method for using heat to manipulate magnetism with unprecedented precision in two-dimensional (2D) van der Waals materials. It is published in the journal Nature Communications.

Typically, heat is an unwanted byproduct of power consumption in , especially in semiconductors. As devices become smaller and more compact, managing heat has become one of the major challenges in modern electronics.

Theoretical physicists completely determine the statistics of quantum entanglement

For the first time, theoretical physicists from the Institute of Theoretical Physics (IPhT) in Paris-Saclay have completely determined the statistics that can be generated by a system using quantum entanglement. This achievement paves the way for exhaustive test procedures for quantum devices.

The study is published in the journal Nature Physics.

After the advent of transistors, lasers and , the entanglement of quantum objects—as varied as photons, electrons and superconducting circuits—is at the heart of a second quantum revolution, with and quantum computing in sight.

Novel protocol enables photon entanglement without quantum measurement

Georgia Tech researchers recently proposed a method for generating quantum entanglement between photons. This method constitutes a breakthrough that has potentially transformative consequences for the future of photonics-based quantum computing.

“Our results point to the possibility of building quantum computers using light by taking advantage of this entanglement,” said Chandra Raman, a professor in the School of Physics. The research is published in the journal Physical Review Letters.

Quantum computers have the potential to outperform their conventional counterparts, becoming the fastest programmable machines in existence. Entanglement is the key resource for building these quantum computers.

Entangled in self-discovery: Quantum computers analyze their own entanglement

Similar to humans going on journeys of self-discovery, quantum computers are also capable of deepening their understanding of their own foundations.

Researchers from Tohoku University and St. Paul’s School, London, have developed a that allows quantum computers to analyze and protect quantum entanglement—a fundamental underpinning of quantum computing. These findings will advance our understanding of quantum entanglement and quantum technologies.

The study was published in Physical Review Letters on March 4, 2025.

Hypersonic shock waves: 3D simulations expose new flow disturbances

At hypersonic speeds, complexities occur when the gases interact with the surface of the vehicle, such as boundary layers and shock waves. Researchers in the Department of Aerospace Engineering at The Grainger College of Engineering, University of Illinois Urbana-Champaign, were able to observe new disturbances in simulations conducted for the first time in 3D.

The study, “Loss of axial symmetry in hypersonic flows over conical shapes,” is published in Physical Review Fluids.

Fully 3D simulations require a great deal of processing power, making the work expensive to compute. Two things made it possible for Deborah Levin and her Ph.D. student Irmak Taylan Karpuzcu to conduct the research: Time on Frontera, the leadership-class computer system at the Texas Advanced Computing Center and software developed in previous years by several of Levin’s former graduate students.

Scientists Launch Open-Source Quantum Computer OS

Additionally, the quantum computing cloud service offered by the University of Osaka has begun integrating OQTOPUS into its operations and Fujitsu Limited will make it available for research partners using its quantum computers in the second half of 2025.

Moving forward, the research team will drive the advancement of quantum computing through the continuous expansion of OQTOPUS’s capabilities and the development of a thriving global community. Dr. Keisuke Fujii at the Center for Quantum Information and Quantum Biology (QIQB) of The University of Osaka mentions, “this will facilitate the standardization of various quantum software and systems while driving the creation of innovative quantum applications.”

The research was funded by the Japan Science and Technology Agency and the National Institutes for Quantum Science and Technology.

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