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quantum physics

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Illustration in which a bright red line results from many wavelike ripples overlapping.
explainers

How Our Reality May Be a Sum of All Possible Realities

By Charlie Wood
February 6, 2023
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Richard Feynman’s path integral is both a powerful prediction machine and a philosophy about how the world is. But physicists are still struggling to figure out how to use it, and what it means.

Video/image of a metronome whose arm is simultaneously ticking rightward and leftward.
quantum physics

How Quantum Physicists ‘Flipped Time’ (and How They Didn’t)

By Charlie Wood
January 27, 2023
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Two teams have made photons act as if time were simultaneously flowing in two directions. The experiments demonstrate a way to potentially boost the performance of quantum devices.

2022 in Review

The Year in Computer Science

By Bill Andrews
December 21, 2022
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Computer scientists this year learned how to transmit perfect secrets, why transformers seem so good at everything, and how to improve on decades-old algorithms (with a little help from AI).

quantum gravity

Physicists Create a Holographic Wormhole Using a Quantum Computer

By Natalie Wolchover
November 30, 2022
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The unprecedented experiment explores the possibility that space-time somehow emerges from quantum information.

cryptography

New Entanglement Results Hint at Better Quantum Codes

By Allison Parshall
October 24, 2022
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A team of physicists has entangled three photons over a considerable distance, which could lead to more powerful quantum cryptography.

A graph that’s broken and crumbling
quantum physics

Experiments Spell Doom for Decades-Old Explanation of Quantum Weirdness

By Philip Ball
October 20, 2022
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Physical-collapse theories have long offered a natural solution to the central mystery of the quantum world. But a series of increasingly precise experiments are making them untenable.

Multimedia

Inside the Proton, the ‘Most Complicated Thing' Imaginable

By Charlie Wood +1 authors
Merrill Sherman
October 19, 2022
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The positively charged particle at the heart of the atom is an object of unspeakable complexity, one that changes its appearance depending on how it is probed.

three side-by-side photos of men (one a blond man in a black turtleneck, one a man with white hair and a beard, and one with brown hair and a graying mustache. overlaid on the images are magenta circles connected by dotted lines, suggesting the phenomenon of quantum entanglement.
Nobel Prize

Pioneering Quantum Physicists Win Nobel Prize in Physics

By Charlie Wood
October 4, 2022
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Alain Aspect, John Clauser and Anton Zeilinger have won the 2022 Nobel Prize in Physics for groundbreaking experiments with entangled particles.

Video in which colorful pieces form in the center of a circule and grow as they move out to the periphery.
quantum gravity

Physicists Rewrite a Quantum Rule That Clashes With Our Universe

By Charlie Wood
September 26, 2022
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The past and the future are tightly linked in conventional quantum mechanics. Perhaps too tightly. A tweak to the theory could let quantum possibilities increase as space expands.


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