As quantum processors typically operate at milli-Kelvin temperatures (around -273°C), they are often installed several meters away from room-temperature graphics processing units (GPUs), causing ...

And it did so by cooling a 30-meter-long aluminum wire to just a few milliKelvin. Because the qubits are so easy to control, the experiment provides a new precision to these sorts of measurements.

They find that the device delivers a large power of about 0.18 W cm^−2 (1800 watts per square meter) for a temperature difference of 1 K, nearly doubling the power that can be extracted from a similar ...