Hayden--Preskill recovery at finite temperature on a quantum processor: dynamics and initial state from the SYK model

Jeongho Bang, Moongul Byun, Kyoungho Cho +2

In the original Hayden--Preskill recovery, the post-injection scrambler and initial state are {\it not related}. We extend this setup in two ways: by using a SWAP gate so that the…