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Quantum mechanics - news, articles and features

Quantum mechanics

Physics

Why no one can agree on what quantum physics really means

For a century, quantum theory has passed every experimental test, but physicists can鈥檛 agree on how to use it to paint a picture of our reality 鈥� or even whether that is possible

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Physics quantum and quantum superposition

Physics

How quantum superposition forces us to confront what is truly real

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Chair on a jetty

Physics

How metaphysics probes hidden assumptions to make sense of reality

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Physics

Searching for the past and future of quantum physics on a tiny island

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Physics

Why John Stewart Bell has been haunting quantum mechanics for decades

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2T1GT7B Artwork of Accelerating Universe

Physics

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

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Abstract prism of light references quantum properties
Physics

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鈥檚 celebrate its power and provocation

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Physics

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

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Physics

Could the ancient Greeks have invented quantum theory?

There were hints that the world may be quantum long before the development of quantum mechanics in 1925 鈥� could we have come up with this revolutionary theory hundreds or even thousands of years earlier?

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Physics

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

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Physics

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

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Physics

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

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Physics

A timeline of the most important events in quantum mechanics

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