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quantum computing

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quantum computing

Machine Learning Aids Classical Modeling of Quantum Systems

By Lakshmi Chandrasekaran
September 14, 2023
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By using “classical shadows,” ordinary computers can beat quantum computers at the tricky task of understanding quantum behaviors.

quantum physics

Physicists Observe ‘Unobservable’ Quantum Phase Transition

By Charlie Wood
September 11, 2023
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Measurement and entanglement both have a “spooky” nonlocal flavor to them. Now physicists are harnessing that nonlocality to probe the spread of quantum information and control it.

A representation of cubits. In this image, they look like fragile bubbles arranged in a grid. Each bubble has similar mathematical markings on it, but they each have an illuminated arrow in their center that’s pointing a different way.
quantum computing

New Codes Could Make Quantum Computing 10 Times More Efficient

By Charlie Wood
August 25, 2023
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Quantum computing is still really, really hard. But the rise of a powerful class of error-correcting codes suggests that the task might be slightly more feasible than many feared.

Q&A

The Cryptographer Who Ensures We Can Trust Our Computers

By Allison Parshall
July 27, 2023
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Yael Tauman Kalai’s breakthroughs secure our digital world, from cloud computing to our quantum future.

Illustration of a lady walking through a hedge maze, with a man sweeping up her footprints.
quantum computing

To Move Fast, Quantum Maze Solvers Must Forget the Past

By Ben Brubaker
July 20, 2023
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Quantum algorithms can find their way out of mazes exponentially faster than classical ones, at the cost of forgetting the path they took. A new result suggests that the trade-off may be inevitable.

quantum computing

Physicists Create Elusive Particles That Remember Their Pasts

By Charlie Wood
May 9, 2023
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In two landmark experiments, researchers used quantum processors to engineer exotic particles that have captivated physicists for decades. The work is a step toward crash-proof quantum computers.

The Joy of Why

Is Perpetual Motion Possible at the Quantum Level?

By Steven Strogatz
May 3, 2023
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A new phase of matter called a “time crystal” plays with our expectations of thermodynamics. The physicist Vedika Khemani talks with Steven Strogatz about its surprising quantum behavior.

quantum gravity

Wormhole Experiment Called Into Question

By Charlie Wood
March 23, 2023
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Last fall, a team of physicists announced that they had teleported a qubit through a holographic wormhole in a quantum computer. Now another group suggests that’s not quite what happened.

A shining lightbulb with a cord that’s not plugged in.
quantum physics

Physicists Use Quantum Mechanics to Pull Energy out of Nothing

By Charlie Wood
February 22, 2023
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The quantum energy teleportation protocol was proposed in 2008 and largely ignored. Now two independent experiments have shown that it works.


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