Strong contextuality conjecture for universally transversal code-switching protocols

Let Q1\mathcal{Q}_1 and Q2\mathcal{Q}_2 be subsystem stabilizer codes, and consider a fault-tolerant code-switching protocol between them. Let the set of transversal gates for each code be the gates implementable transversally on that code. Strong contextuality conjecture. If the union of the set of transversal gates for Q1\mathcal{Q}_1 and that for Q2\mathcal{Q}_2 forms a universal gate set, then the code-switching protocol must be strongly contextual in a partial closure. This is proposed as a no-go principle for noncontextual routes to transversal universality through code-switching; the supplied text gives no resolution, so the conjecture remains open.

Sources & referencesView supporting material

Primary source

Derek Khu, Andrew Tanggara, Chao Jin and Kishor Bharti, “Contextuality of Quantum Error-Correcting Codes”, arXiv:2502.02553 (2026).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.