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An Atom That Refuses to Settle Down, and Why That Helps
Quantum Technology

An Atom That Refuses to Settle Down, and Why That Helps

Atoms aren’t famous for their patience. Nudge an electron up to a high energy level and it usually tumbles back...
Scientists Designed a Promising New Qubit. It Only Exists in Simulation
Quantum Technology

Scientists Designed a Promising New Qubit. It Only Exists in Simulation

Imagine ordering a custom part from a factory, except the factory is a supercomputer and the part is a single...
Entangled Photons Survived a Fiber Stuffed With Internet Traffic
Quantum Technology

Entangled Photons Survived a Fiber Stuffed With Internet Traffic

Picture a single ant trying to walk a road as a herd of elephants stampedes down it. Those are the...
Quantum Elastic Weight Consolidation Solves The Problem Where Teaching an AI Something New Makes It Forget the Old Thing
Quantum Technology

Quantum Elastic Weight Consolidation Solves The Problem Where Teaching an AI Something New Makes It Forget the Old Thing

Here’s a failure mode that will feel uncomfortably familiar. You cram for one exam, ace it, then cram for the...
Physicists Built a Waffle, and It Might Be Important for Quantum Computing
Quantum Technology

Physicists Built a Waffle, and It Might Be Important for Quantum Computing

Almost every superconducting quantum computer you have heard of is flat. IBM’s, Google’s, the lot. Josephson junctions sit on a...
Quantum Computing Runs on Helium-3, and Most of It Comes From Old Weapons Stockpiles
Quantum Technology

Quantum Computing Runs on Helium-3, and Most of It Comes From Old Weapons Stockpiles

Here’s a supply chain nobody puts on a slide. Superconducting quantum computers have to be chilled to a hair above...
A Ribbon Nine Atoms Wide That Snitches on Radiation
Quantum Technology

A Ribbon Nine Atoms Wide That Snitches on Radiation

Here’s a design problem that sounds impossible. You need a sensor that sits in one of the most hostile places...
Scientists Made a New State of Matter Inside a Quantum Computer, Then Braided It
Quantum Technology

Scientists Made a New State of Matter Inside a Quantum Computer, Then Braided It

Here’s a sentence that shouldn’t be possible: a team of physicists took the qubits inside a quantum computer, coaxed them...
This Entangled State Shrugs Off the Fiber Noise Everyone Else Fights
Quantum Technology

This Entangled State Shrugs Off the Fiber Noise Everyone Else Fights

Sending entanglement down an optical fiber is normally a nightmare of babysitting. Fiber gets warm, gets bent, gets nudged, and...
A New Material Sorts Light by Something Weirder Than Color
Quantum Technology

A New Material Sorts Light by Something Weirder Than Color

Every light filter you’ve ever met sorts by the obvious stuff. Sunglasses cut glare by polarization. A red gel on...