Contents

28 August 2020
Vol 369, Issue 6507

About The Cover

Cover image expansion

COVER The Sycamore quantum processor, composed of an array of superconducting transmon qubits, simulates the energy of the diazene molecule in various conformations. By combining error mitigation and improved qubit calibration techniques, the simulation accurately models the isomerization pathway that reorients the hydrogen atoms (white) about the central bonds between nitrogen atoms (blue). See pages 1054 and 1084. Illustration: C. Bickel/Science