Scientists at RIKEN have proposed a new way to make quantum systems synchronize in only one direction—like a one-way street for sound particles known as phonons. The breakthrough combines two quantum effects to create a form of one-way quantum synchronization that remains surprisingly stable even when exposed to manufacturing flaws and environmental noise,

Helios, a US-based quantum computer, demonstrated 99.9975% fidelity in one-qubit operations, while maintaining 99.921%

The approach is known for high accuracy, but scaling it up while preserving that accuracy is technically difficult. Helios uses barium ions in what is called a quantum charge-coupled device, or QCCD, architecture. A useful way to picture it is as a tiny quantum railway.

Oak Ridge National Laboratory just launched Pathfinder, a quantum computer built to tackle complex global challenges.