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Category: quantum physics – Page 5

3D-printed micro ion traps could solve quantum tech’s miniaturization problem

The existing bottleneck in efficiently miniaturizing components for quantum computers could be eased with the help of 3D printing.

Quantum computers tackle massive computational challenges by harnessing the power of countless tiny parts working seamlessly together. Trapped ion technology, where charged particles like ions are trapped by manipulating the , is one such component.

Current microfabrication techniques fall short when it comes to producing the complex electrode structures with optimal ion confinement suitable for quantum operations.

Quantum Computers Mimic Black Holes To Probe Cosmic Secrets

The difference between traditional computers and quantum computers is narrowing in their ability to simulate the scrambling of quantum information. A team of four researchers at RIKEN has successfully used two small quantum computers to simulate quantum information scrambling, a key process in qu

Gold quantum needles could sharpen imaging resolution and boost energy conversion

Researchers Shinjiro Takano, Yuya Hamasaki, and Tatsuya Tsukuda of the University of Tokyo have successfully visualized the geometric structure of growing gold nanoclusters in their earliest stages. During this process, they also successfully grew a novel structure of elongated nanoclusters, which they named gold quantum needles.

UCLA Engineers Build Room-Temperature Quantum-Inspired Computer

Experimental device harnesses quantum properties for efficient processing at room temperature. Engineers are working to design computers capable of handling a difficult class of tasks known as combinatorial optimization problems. These challenges are central to many everyday applications, includi

Quantum emitter discovery in diamonds enables a new type of coupling

Researchers at The City College of New York have shown how a quantum emitter, the nitrogen-vacancy (NV) center in diamond, interacts in unexpected ways with a specially engineered photonic structure when moved around with a scanning tip.

The study, led by Carlos A. Meriles—Martin and Michele Cohen Professor of Physics in the Division of Science—and titled “Emission of Nitrogen–Vacancy Centres in Diamond Shaped by Topological Photonic Waveguide Modes,” appears in the journal Nature Nanotechnology.

What has long been considered a drawback of the NV center—its broad and messy emission spectrum—turns out to enable a new type of coupling that reshapes its light in ways not seen before. This discovery has fundamental importance for , since such coupling could help overcome longstanding challenges like spectral diffusion and open pathways toward robust spin–photon and spin–spin entanglement on a chip.

Algorithms that address malicious noise could result in more accurate, dependable quantum computing

Quantum computers promise enormous computational power, but the nature of quantum states makes computation and data inherently “noisy.” Rice University computer scientists have developed algorithms that account for noise that is not just random but malicious. Their work could help make quantum computers more accurate and dependable.

Fabrication technique opens door to new materials for quantum hardware

Researchers have demonstrated a new fabrication approach that enables the exploration of a broader range of superconducting materials for quantum hardware.

The study, published in Applied Physics Letters, addresses a long-standing challenge: many promising superconductors, such as transition metal nitrides, carbides, and silicides, are difficult to pattern into functional devices using conventional chemistry-based methods.

By showing that physical patterning provides a viable alternative, the study paves the way to evaluate and harness these materials for high-performing quantum technologies.

Scientists create scalable quantum node linking light and matter

Quantum scientists in Innsbruck have taken a major leap toward building the internet of the future. Using a string of calcium ions and finely tuned lasers, they created quantum nodes capable of generating streams of entangled photons with 92% fidelity. This scalable setup could one day link quantum computers across continents, enable unbreakable communication, and even transform timekeeping by powering a global network of optical atomic clocks that are so precise they’d barely lose a second over the universe’s entire lifetime.

Magnifying Atomic Images

A new technique allows the imaging of an atomic system in which the interatomic spacing is smaller than the optical-resolution limit.

To gain in-depth understanding of quantum matter, researchers need to probe it at the microscopic level. Ultracold atoms—ensembles of atoms cooled to near absolute zero—offer an exceptionally clean and controllable platform for exploring collective quantum phenomena. Over the past two decades, researchers have sought to take in situ “snapshots” in which every single atom is individually resolved in position and, when needed, in spin. Recent advances have brought this vision to life and have significantly accelerated our understanding of collective quantum behaviors. Yet an important challenge remains: In a number of situations, the typical spacing between particles is smaller than the resolution limit of conventional optical imaging. Now Selim Jochim and his group at Heidelberg University in Germany have introduced a method to overcome this barrier by making the system “self-magnify” before imaging [1].

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