Super-Semi MOC

Curated map of Zoo entries in the Super-Semi family.

Entries

Entry	Type	Status
all-semiconductor-superconducting-qubit	qubit	proposed
andreev-spin-qubit	qubit	demonstrated
ferbo-qubit	qubit	active
gatemon	qubit	demonstrated
gatemonium	qubit	demonstrated

Composition

• qubit: 5

Conceptual anchors

• josephson-junction-as-nonlinear-element is the shared superconducting backbone, even when the weak link is semiconductor-defined rather than oxide-barrier-defined.
• spin-orbit-coupling-for-qubit-control is the key separator between purely gate-tunable Josephson devices and spin-active Andreev hybrids.
• charge-noise-sweet-spot is the right lens for comparing how much electrical tunability each architecture gains without paying too much dephasing cost.

Hybrid control spectrum

• gatemon and gatemonium use the semiconductor mainly to reshape the Josephson element: the qubit is still read most naturally as a superconducting circuit whose nonlinearity has become gate tunable.
• andreev-spin-qubit and ferbo-qubit move the semiconductor into the qubit degree of freedom itself, so parity stability, spin-orbit structure, and Andreev-level engineering matter as much as ordinary circuit-QED coherence numbers.
• all-semiconductor-superconducting-qubit is the fabrication-endpoint branch, asking whether the whole superconducting stack can inherit semiconductor-style integration advantages rather than just a gate-tunable weak link.

Family structure

• gatemon and gatemonium are superconducting-circuit descendants that replace conventional tunnel junction elements with gate-tunable semiconductor weak links.
• andreev-spin-qubit and ferbo-qubit lean harder on Andreev-bound-state physics, using the semiconductor not just as a tunable junction but as part of the qubit degree of freedom itself.
• all-semiconductor-superconducting-qubit is best read as a materials-and-fabrication endpoint for this family, not yet the central coherence benchmark.
• For the non-hybrid dot and donor branch of the same broader materials ecosystem, see semiconducting-moc.

Boundary with the superconducting family

This family shares a lot of vocabulary with superconducting-moc, especially around Josephson elements, circuit-QED readout, and sweet-spot language, but the routing rule is simple: stay here only when the semiconductor weak link is doing conceptual work. gatemon and gatemonium belong here because gate-tunable junction physics is the point, and andreev-spin-qubit / ferbo-qubit belong here because Andreev-level and parity structure enter the qubit itself. If the main story is instead protected-circuit geometry, bosonic encoding, or ordinary superconducting coherence scaling, route back to superconducting-moc even when the fabrication stack overlaps.

Boundary with the topological family

This family shares hardware vocabulary with topological-moc such as InAs/Al heterostructures, Josephson weak links, and strong spin-orbit coupling, but it makes a different promise. gatemon, andreev-spin-qubit, and ferbo-qubit stay here because their value comes from tunability, Andreev structure, or circuit-level protection inside an otherwise conventional control stack. Once the central claim becomes nonlocal parity encoding or a phase-biased topological channel that is supposed to suppress errors before code overhead, route the reader to topological-moc instead.

Editorial note

This family is about hybridization, not mere material substitution. Keep links focused on what the semiconductor changes in the circuit physics, control surface, or protection story.