• Physics 15, 175

Quantum circuits still can’t outperform classical ones when simulating molecules.

E. Lucero/Google

Get real. The Sycamore chip made by Google, comprising 53 quantum bits, has been used to explore “quantum advantage”: a performance in quantum computation that exceeds anything possible on classical computers.

In case you had not noticed, computers are hot—literally. A laptop can pump out thigh-baking heat, while data centers consume an estimated 200 terawatt-hours each year—comparable to the energy consumption of some medium-sized countries. The carbon footprint of information and communication technologies as a whole is close to that of