Physics

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Programmable photonic chip may pave the way for light-speed optical computing

As computers become faster, light seems like the ideal medium because nothing travels faster. Yet high-speed computing depends not only on speed but also on precise timing. Although scientists can control the flow of light, today’s photonic hardware is typically built for one fixed design and operating speed. The challenge is finding a way to […]

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Scientists have sent quantum particles across 61 km of conventional fiber optic cable

The internet relies on cables, servers, and encryption systems that remain vulnerable to attacks. For years, researchers have explored quantum physics as a possible foundation for a more secure alternative. An experiment using standard fiber optics has overcome a major hurdle, bringing quantum technology closer to real-world networks. A new milestone has been reached in

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Tiny magnetic waves may make it possible to build quantum computers as small as a penny

Physicists have extended the lifespan of magnons—tiny magnetic waves that can carry quantum information—from a few hundred nanoseconds to 18 microseconds, nearly a 100-fold improvement over previous records. This achievement could pave the way for highly compact quantum computers, potentially no larger than a 1-cent coin. Led by Andrii Chumak at the University of Vienna,

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