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Scientists Made Entangled Photons With Sunlight, No Laser Needed
Quantum Technology

Scientists Made Entangled Photons With Sunlight, No Laser Needed

For as long as anyone has built quantum light, the rule was simple: to make a pair of entangled photons,...
Spooky Signals Survived a Trip Through Maryland's Messiest Fiber
Quantum Technology

Spooky Signals Survived a Trip Through Maryland’s Messiest Fiber

Entanglement is the strangest resource in physics and one of the most delicate. Two photons can share a single quantum...
Quantum Source's Plan: Photons Carry the Information, Atoms Do the Linking
Quantum Technology

Quantum Source’s Plan: Photons Carry the Information, Atoms Do the Linking

Every approach to a useful quantum computer is trying to clear the same bar: error correction good enough to run...
D-Wave's New Gate Keeps Its Qubits' Errors Easy to Spot
Quantum Technology

D-Wave’s New Gate Keeps Its Qubits’ Errors Easy to Spot

Most qubits fail unnoticed. Something nudges the quantum state, the information corrupts, and the machine has no idea until error...
A Qubit That Lasts Longer, Because of What It's Made Of
Quantum Technology

A Qubit That Lasts Longer, Because of What It’s Made Of

A superconducting qubit is a beautiful, fragile thing. It holds quantum information for a flicker, a fraction of a millisecond...
A Secret That Can't Be Copied, Even After the Key Is Out
Quantum Security

A Secret That Can’t Be Copied, Even After the Key Is Out

Copy an encrypted file and you’ll have two encrypted files, both openable with the same key. That’s how digital information...
A Quantum Advantage Result You Can Actually Check
Quantum Technology

A Quantum Advantage Result You Can Actually Check

Most quantum-advantage claims have two soft spots. You usually can’t verify the answer, since the whole point is that it’s...
A Warm Atom Cloud and a Cold Quantum Dot, Emitting Identical Photons
Quantum Technology

A Warm Atom Cloud and a Cold Quantum Dot, Emitting Identical Photons

A quantum network is a mix-and-match problem. You want bright, fast photon sources for sending information, and you want atomic...
Where Classical Supercomputers Stopped Agreeing, a Quantum Chip Held On
Quantum Technology

Where Classical Supercomputers Stopped Agreeing, a Quantum Chip Held On

Point one of the world’s fastest supercomputers at a hard enough physics problem and, eventually, it starts giving you answers...
The Lab That Bent Light Backwards Is Going Quantum
Quantum Technology

The Lab That Bent Light Backwards Is Going Quantum

Natural materials bend light in predictable ways. Glass slows it and tilts it toward you, and water does much the...