{"id":39945,"date":"2025-06-18T15:00:45","date_gmt":"2025-06-18T13:00:45","guid":{"rendered":"https:\/\/www.uni.lu\/fstm-en\/?post_type=news&p=39945"},"modified":"2025-06-26T11:39:40","modified_gmt":"2025-06-26T09:39:40","slug":"quantum-algorithms-unlock-tomorrows-impossible-problems","status":"publish","type":"news","link":"https:\/\/www.uni.lu\/fstm-en\/news\/quantum-algorithms-unlock-tomorrows-impossible-problems\/","title":{"rendered":"Quantum algorithms unlock tomorrow’s impossible problems"},"content":{"rendered":"\n
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Imagine a world where quantum computing solves problems that even our most powerful supercomputers can’t handle today. This technology could help design new medicines with perfect precision, build smarter AI systems, or even model climate change accurately. <\/p>\n\n\n\n

This isn’t science fiction anymore. Quantum algorithms are becoming reality, as experts recently discussed at the University of Luxembourg’s first Quantum Breakfast<\/a> event. <\/p>\n\n\n\n

\u201cLuxembourg is the perfect place to build a bridge between scientific breakthroughs and real-world applications,\u201d said Professor Pascal Bouvry<\/a>, Dean of the Faculty of Science, Technology and Medicine. This ambition to turn cutting-edge research into practical solutions is shaping Luxembourg\u2019s growing role in the quantum ecosystem.<\/p>\n\n\n

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\nWhat exactly are quantum algorithms?<\/h2>\n\n\n\n

At the heart of every computer we use today are ‘bits’ \u2013 tiny switches that are either ON or OFF. They’re like light switches in your home: definitively in one state or the other. But quantum computers operate on something far more mystical: qubits. <\/p>\n\n\n\n

Picture this: a qubit isn’t just 0 or 1; it can be both<\/em> at the same time. This concept is called superposition<\/em>, a purely quantum mechanical phenomenon. Consider the famous thought experiment known as Schr\u00f6dinger’s cat. In this scenario, a cat is sealed in a box with a device that might or might not release poison based on a random quantum event. According to quantum mechanics, until someone opens the box to check, the cat exists in a state of being both alive and dead simultaneously. A qubit works similarly: it exists in multiple states at once until it’s observed or measured, at which point it “chooses” a definite state.  <\/p>\n\n\n\n

But quantum computing has another powerful feature. Qubits can also become entangled.<\/em> When this happens, two or more quantum objects connect so deeply that changing one instantly affects the other, regardless of distance. This strange connection enables quantum parallelism<\/em>. It’s like having a superpower that lets quantum computers test many solutions at the same time. <\/p>\n\n\n

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\nWhat’s the advantage of quantum?<\/h2>\n\n\n\n

Simply put, quantum algorithms are designed to be faster. Not faster in terms of clock speed, but in the number of operations they need to perform to calculate something. This efficiency stems from their ability to exploit superposition and entanglement, tackling problems that are practically impossible for classical computers. <\/p>\n\n\n\n

This leads to breakthroughs in areas where even today’s most powerful supercomputers struggle. Quantum algorithms can solve complex optimisation problems like planning the best routes or managing investment portfolios. In chemistry and materials science, they simulate molecules and predict how they interact. This helps scientists discover new drugs and materials faster. <\/p>\n\n\n\n

For data-heavy work like AI and fraud detection, quantum search algorithms work much faster than traditional methods. Weather modelling becomes more accurate. Financial forecasting improves dramatically. These quantum computers can solve complex equations more efficiently, leading to better predictions and analysis. <\/p>\n\n\n\n

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