Billions of entangled particles

This has been making quite a bit of news lately, the entanglement of 10^10 spin pairs. (Image from the paper on Nature.) Here are a few different articles:

• New York Times
• Reuters
• Nature

Entanglement of 3 out of 4 qubits in a superconducting system

Out of Nature: Entanglement of 3 out of 4 qubits in a superconducting system. Of course, others have done more than that, but superconducting systems seem to be more scalable- which means they have the possibility of being the first practical system.

Seeing Quantum Simulators

From PhysicsWorld.com: Quantum simulators revealed in fresh detail. What I found the most interesting in the article:

"A Mott insulator with exactly one atom per lattice site represents a very promising candidate for a quantum register of up to a few hundred atomic quantum bits," adds Kuhr. "However, we needed to show that we really are able to manipulate each individual atom in the structure. This is crucial for encoding and reading out qubits and we are now at the beginning of setting up the first experiments of this kind."

There is also an article in Nature here.