Aalto team gets 1ms coherence on a transmon, how big is this really?

Was just reading this article → Physicists Break Quantum Barrier With Record-Breaking Qubit Coherence https

The team at Aalto University managed to keep a transmon qubit stable for over 1 millisecond, with most of their devices lasting around 541 microseconds. They also measured how long the qubits held their energy (called T₁), with a typical time of 425 microseconds and the best one reaching 666 microseconds. (A transmon qubit is a tiny superconducting circuit that stores quantum information using microwave energy.)

They didn’t switch up the hardware, just really refined the fabrication and measurements. The results are published here

Longer coherence means fewer errors and less overhead for error correction, which helps with scalability. But…

Will this and similar results actually move the needle for real-world quantum computing,
or is it just a super clean lab result that’s hard to scale up?

Curious what others here think.

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Still a big open question if you can maintain coherence over a big enough circuit depth. IMHO superconducting architectures are really great demonstration tools but the scalability questions really cloud the near/mid-term outlook.

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