NEWS - QUANTUM TECH

These results hint at the possibility of paradigm-shifting optical quantum devices based not on conventional, difficult-to-scale components like waveguides and beam splitters, or even extended optical microchips, but instead on error-resistant metasurfaces that offer a host of advantages: designs that don’t require intricate alignments, robustness to perturbations, cost-effectiveness, simplicity of fabrication, and low optical loss. Broadly speaking, the work embodies metasur

Researchers have succeeded in unraveling for the first time the mystery of the 'electron tunneling' process, a core concept in quantum mechanics, and confirmed it through experiments. This study was published in the international journal Physical Review Letters and is attracting attention as a key to unlocking the long-standing mystery of 'electron tunneling,' which has remained unsolved for over 100 years.

On July 8, 2025, physicists from Aalto University in Finland published a transmon qubit coherence dramatically surpassing previous scientifically published records. The millisecond coherence measurement marks a quantum leap in computational technology, with the previous maximum echo coherence measurements approaching 0.6 milliseconds.

In a growing and very competitive research landscape in quantum, this work demonstrates the versatility of the semiconductor–superconductor platform to realize and study new types of quantum states.

Scientists have developed a new X-ray laser approach that generates the shortest pulses of high-energy X-rays to date, clocking in at 60-100 attoseconds (quintillionths of a second). By using a powerful laser to stimulate inner shell electrons—those closest to an atomic nucleus—this fast and powerful technique captures detailed movements of electrons, enabling the study of quantum-scale phenomena previously thought unobservable.

Researchers from the RIKEN Center for Quantum Computing and Huazhong University of Science and Technology have conducted a theoretical analysis demonstrating how a “topological quantum battery”—an innovative device that leverages the topological properties of photonic waveguides and quantum effects of two-level atoms—could be efficiently designed.

Using advanced computational modelling, a research team led by the University of Oxford has achieved the first-ever real-time, three-dimensional simulations of how intense laser beams alter the ‘quantum vacuum’—a state once assumed to be empty, but which quantum physics predicts is full of virtual electron-positron pairs.

In hyper-entanglement, two characteristics of a particle pair are correlated. As a simple analogy, this would be like a set of twins separated at birth having both the same names and same types of cars: The two traits are correlated between the twins. In the new study, Endres and his team were able to hyper-entangle pairs of atoms such that their individual states of motion and their individual electronic states—their internal energy levels—were correlated among the atoms.

The work is set to open new avenues for the study of the exotic physics arising from the interplay of interactions and a magnetic field. This includes, for example, microscopic studies of the fractional quantum Hall effect and its properties such as anyonic excitations, long-range entanglement and topological order. These phenomena offer the potential to deepen our understanding of fundamental quantum physics while also paving the way for practical applications, for example i

An exact expression for a key process needed in many quantum technologies has been derived by a RIKEN mathematical physicist and a collaborator. This could help to guide advances in quantum technologies.

Diamonds with certain optically active defects can be used as highly sensitive sensors or qubits for quantum computers, where the quantum information is stored in the electron spin state of these colour centres. However, the spin states have to be read out optically, which is often experimentally complex. Now, a team at HZB has developed an elegant method using a photo voltage to detect the individual and local spin states of these defects. This could lead to a much more comp

Researchers have caused a material’s superconductivity to permeate into a nearby normal metal via a single molecule. They showed that this effect could be controlled and say that this control could allow the creation of so-called Majorana quasiparticles, which many research teams are exploring as future quantum bits (qubits) for quantum computers.