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quantum information theory

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An illustration of a black hole made out of computer circuits.
quantum information theory

In New Paradox, Black Holes Appear to Evade Heat Death

By George Musser
June 6, 2023
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The puzzling behavior of black hole interiors has led researchers to propose a new physical law: the second law of quantum complexity.

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.

Purple illustration of round qubits pointing to rows of blocks that progressively become more chaotic.
quantum computing

New Algorithm Closes Quantum Supremacy Window

By Ben Brubaker
January 9, 2023
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Random circuit sampling, a popular technique for showing the power of quantum computers, doesn’t scale up if errors go unchecked.

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.

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.

A curly arrow being straightened out.
theoretical physics

Physicists Rewrite the Fundamental Law That Leads to Disorder

By Philip Ball
May 26, 2022
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The second law of thermodynamics is among the most sacred in all of science, but it has always rested on 19th century arguments about probability. New arguments trace its true source to the flows of quantum information.

A man sits at a table in the middle of a wood-paneled library, perusing a large book.
Q&A

Pondering the Bits That Build Space-Time and Brains

By Charlie Wood
April 20, 2022
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Vijay Balasubramanian investigates whether the fabric of the universe might be built from information, and what it means that physicists can even ask such a question.

Blurry figures representing quantum officers are arranged in a grid against a black background.
mathematical physics

Euler’s 243-Year-Old ‘Impossible’ Puzzle Gets a Quantum Solution

By Daniel Garisto
January 10, 2022
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A surprising new solution to Leonhard Euler’s famous “36 officers puzzle” offers a novel way of encoding quantum information.


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