Major improvements in quantum fidelity, a potential step toward more accurate, reliable quantum networks and supercomputers.

https://www.olcf.ornl.gov/2022/01/07/firing-up-quantum-fidelity/

"The researchers used quantum state tomography, which estimates the properties of a quantum state based on the properties of similar states, to keep track of values and correct for errors upon completion. The results showed a 23 percent improvement in quantum state fidelity – one of the most successful refinements for a quantum problem so far"

Related:

Quantum computing in silicon hits 99% accuracy

https://phys.org/news/2022-01-quantum-silicon-accuracy.html

Wireless technique enables quantum computer to send and receive data without generating too much error-causing heat

https://techxplore.com/news/2023-02-wireless-technique-enables-quantum-generating.html

Google announces major breakthrough that represents ‘significant shift’ in quantum computers

https://www.independent.co.uk/tech/google-quantum-computer-error-correction-latest-b2287412.html