Did they actually achieve de-entanglement and re-coherence here? It looks like it to me. But whaddooeyeno? G. B. Lesovik, I. A. Sadovskyy, M. V. Suslov, A. V. Lebedev, and V. M. Vinokur: Arrow of Time and Its Reversal on IBM Quantum Computer: "The arrow of time... within the framework of statistical physics... [is] the second law of thermodynamics... entropy growth proceeds from the system's entanglement with the environment.... Whether the irreversibility of time... might be circumvented.... While in nature the complex conjugation needed for time reversal is exponentially improbable, one can design a quantum algorithm that includes complex conjugation and thus reverses a given quantum state... on an IBM quantum computer... backward time dynamics for an electron scattered on a two-level impurity...
#noted
