A studio photograph of a gloved hand holding, with tweezers, a dark chip about 1 cm long, above a metal sample package engraved with the Alice & Bob logo. Uploaded by Nilhope in 2024; the title calls it the Alice & Bob Helium chip (which Helium generation cannot be told). It belongs to the cat-qubit approach, where superconducting circuits store information in microwave 'cat states' that resist bit flips and a repetition-type code corrects the rest; notice the central chain of about ten repeated circuit cells.“Alice & Bob Helium Chip” by Nilhope, commons.wikimedia.org/wiki/File:Alice_%26_Bob_Helium_Chip.jp…, CC BY SA 4.0 (creativecommons.org/licenses/by-sa/4.0/)Photograph of a small square superconducting chip held in tweezers by a gloved hand, beside a machined metal sample holder engraved with a cat-head logo; the chip is labelled 'GCT-0004-09' and carries two mirrored circuits with feedlines and launch pads. Uploaded by SachaAB (2022) as 'Cat Qubit Boson Chip'; the caption says such chips use superconducting circuits to generate, stabilise and control cat qubits. Cat qubits store information in two coherent states of a microwave resonator, which makes bit-flip errors very rare.“Cat Qubit Boson Chip” by SachaAB, commons.wikimedia.org/wiki/File:Cat_Qubit_Boson_Chip.jpg, CC BY 4.0 (creativecommons.org/licenses/by/4.0/)
