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quantum computing

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A purple key drawn on a lattice of points.
explainers

How Cryptography’s Quantum-Safe Future Will Work

By Leila Sloman
November 9, 2022
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Lattice cryptography promises to protect secrets from the attacks of far-future quantum computers.

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.

cryptography

How Do You Prove a Secret?

By Sheon Han
October 11, 2022
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Zero-knowledge proofs allow researchers to prove their knowledge without divulging the knowledge itself.

cryptography

‘Post-Quantum’ Cryptography Scheme Is Cracked on a Laptop

By Jordana Cepelewicz
August 24, 2022
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Two researchers have broken an encryption protocol that many saw as a promising defense against the power of quantum computing.

Red particles with varying spins and some entanglement
computational complexity

Computer Science Proof Unveils Unexpected Form of Entanglement

By Mordechai Rorvig
July 18, 2022
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Three computer scientists have posted a proof of the NLTS conjecture, showing that systems of entangled particles can remain difficult to analyze even away from extremes.

An orange machine casts search lights over a purple landscape.
quantum computing

Quantum Algorithms Conquer a New Kind of Problem

By Mordechai Rorvig
July 11, 2022
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Computer scientists have found a new type of problem that quantum computers can solve dramatically faster than their classical counterparts.

cryptography

Cryptographers Achieve Perfect Secrecy With Imperfect Devices

By Mordechai Rorvig
February 25, 2022
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For the first time, experiments demonstrate the possibility of sharing secrets with perfect privacy — even when the devices used to share them cannot be trusted.

Photo of an array of metal tubes and glass pieces, with an orange laser cutting horizontally across
machine learning

Machine Learning Gets a Quantum Speedup

By Max G. Levy
February 4, 2022
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Two teams have shown how quantum approaches can solve problems faster than classical computers, bringing physics and computer science closer together.

An illustration of a locomotive pulling train cars, with math symbols piled in the caboose.
computational complexity

Computer Scientists Eliminate Pesky Quantum Computations

By Nick Thieme
January 19, 2022
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For years, intermediate measurements made it hard to quantify the complexity of quantum algorithms. New work establishes that those measurements aren’t necessary after all.


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