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Category: computing – Page 41

New computer model reveals how Bronze Age Scandinavians could have crossed the sea

People living in Bronze Age-era Denmark may have been able to travel to Norway directly over the open sea, according to a study published in PLOS One by Boel Bengtsson from the University of Gothenburg, Sweden, and colleagues. To complete this study, the research team developed a new computer modeling tool that could help other scientists better understand how ancient peoples traversed the sea.

The Bronze Age cultures of what are now northern Denmark and southwestern Norway are quite alike, with similar artifacts, burial systems, and architecture. Cultural exchange between the two regions was likely made possible by vessels traveling along the coastlines of Scandinavia, following a 700-kilometer route across Denmark, up the coast of Sweden and back down to southwestern Norway.

However, the researchers of this new paper suggest, the cultural similarities between these two regions invite speculation that ancient people may also have traveled directly between the two sites—over more than 100 kilometers of open ocean.

Scientists unveil new way to electrically control spin for ultra-compact devices using altermagnetic quantum materials

Spintronics, an emerging field of technology, exploits the spin of electrons rather than their charge to process and store information. Spintronics could lead to faster, more power-efficient computers and memory devices. However, most spintronic systems require magnetic fields to control spin, which is challenging in ultracompact device integration due to unwanted interference between components. This new research provides a way to overcome this limitation.

As published in Materials Horizons, a research team led by the Singapore University of Technology and Design (SUTD) has introduced a novel method to control electron spin using only an . This could pave the way for the future development of ultra-compact, energy-efficient spintronic devices.

Their findings demonstrate how an emerging type of magnetic material, an altermagnetic bilayer, can host a novel mechanism called layer-spin locking, thus enabling all-electrical manipulation of spin currents at room temperature.

The Exotic Particle That Might Finally Make Quantum Computers Reliable

Scientists have developed a more stable platform for Majorana zero modes, exotic particles that could revolutionize quantum computing. Using a carefully engineered three-site Kitaev chain composed of quantum dots and superconducting links, the team achieved greater separation of MZMs, boosting th

Quantum Leap: Harvard’s Tiny Light-Powered Chip Connects Quantum Computers

Harvard scientists have developed a groundbreaking photon router that connects optical signals to superconducting microwave qubits, the building blocks of many quantum computers. This innovation could overcome one of quantum computing’s biggest hurdles: getting different quantum systems to “talk”

New study achieves major advance towards fault-tolerant quantum computing

A study, “Enhanced Majorana stability in a three-site Kitaev chain,” published in Nature Nanotechnology demonstrates significantly enhanced stability of Majorana zero modes (MZMs) in engineered quantum systems.

This research, conducted by a team from the University of Oxford, Delft University of Technology, Eindhoven University of Technology, and Quantum Machines, represents a major step towards fault-tolerant quantum computing.

Majorana zero modes (MZMs) are exotic quasiparticles that are theoretically immune to environmental disturbances that cause decoherence in conventional qubits. This inherent makes them promising candidates for building robust quantum computers. However, achieving sufficiently stable MZMs has been a persistent challenge due to imperfections in traditional materials.