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Quantum mechanics - news, articles and features

2T1GT7B Artwork of Accelerating Universe

Physics

How dark energy findings may inspire a new generation of physics nerds

The discovery of the cosmic acceleration problem truly inspired me as a teenage physics nerd. Recent, related revelations about dark energy will hopefully capture the interest of today’s young science geeks, says Chanda Prescod-Weinstein

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Abstract prism of light references quantum properties

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Five physicists discuss the achievements and future of quantum theory

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Quantum computer circuitry illustration. Conventional computers store information as 'bits', with each transistor holding either a 1 or a 0. Quantum computers use quantum bits, or qubits, which operate according to two principles of quantum physics. One of the principles, supposition, allows a qubit to store a 1 and a 0 at the same time. This means two qubits can hold four values at once. The second principle, entanglement, means that the state of one qubit can depend on the state of another. As you expand the number of qubits, the machine becomes exponentially more powerful.

Physics

Quantum theory at 100: Let’s celebrate its power and provocation

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Where exactly does the quantum world end and concrete reality begin?

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Where exactly does the quantum world end and concrete reality begin?

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Could the ancient Greeks have invented quantum theory?

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Could the ancient Greeks have invented quantum theory?

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What exactly would a full-scale quantum computer be useful for?

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What exactly would a full-scale quantum computer be useful for?

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Carlo Rovelli on what we get wrong about the origins of quantum theory

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Carlo Rovelli on what we get wrong about the origins of quantum theory

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What does quantum theory really tell us about the nature of reality?

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What does quantum theory really tell us about the nature of reality?

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A timeline of the most important events in quantum mechanics

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A timeline of the most important events in quantum mechanics

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Where Schrödinger’s cat came from – and why it’s getting fatter

Schrödinger called his metaphorical cat “quite ridiculous” but the quantum weirdness it represents has become a useful benchmark for the quantum computing industry, finds our quantum columnist Karmela Padavic-Callaghan

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Technology

The epic quest to redefine the second using the world's best clocks

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Space

Einstein's theory was wrong about black holes made out of light

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Physics

How to wrap your mind around the real multiverse

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Space

We finally know why Stephen Hawking's black hole equation works

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