Q11 — Does multiplicity-space coherence improve STP protocols?

[marwahaha]

Discussion of Q11: Does multiplicity-space coherence improve STP protocols?.

Within one total-spin sector, compare a state with its dephased version in a fixed coupling basis. Seek a separation in task success probability or measurement cost.

Possible reductions, counterexamples, special cases, and related results are welcome. Please state the assumptions and link to relevant work.

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