Millisecond Coherence in a Superconducting Qubit

[erek]

Interesting

“Improving control over physical qubits is a crucial component of quantum computing research. Here we report a superconducting fluxonium qubit with uncorrected coherence time T∗2=1.48±0.13  ms, exceeding the state of the art for transmons by an order of magnitude. The average gate fidelity was benchmarked at 0.99991(1). Notably, even in the millisecond range, the coherence time is limited by material absorption and could be further improved with a more rigorous fabrication. Our demonstration may be useful for suppressing errors in the next generation quantum processors.”

Source: https://www.sciencealert.com/fluxon...-for-1-43-milliseconds-10x-longer-than-before

 

[HeadRusch]

I'm sure the smartest amongst us...which sadly appears to not be me....will read the above and be suitably impressed, perplexed or skeptical. However, when I read this: "superconducting fluxonium qubit with uncorrected coherence time", all I get is this:

IMPORTANT UPDATE: I thought on this more, and now I'm also getting some of this...