Averaged accessible information under Haar-random local measurements is a function of local purity and distinguishes dynamical confinement, ballistic transport, scar revivals, and many-body localization in quantum many-body systems.
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Exact closed-form size-independent expressions for von Neumann and Rényi entanglement entropies plus Loschmidt echoes are obtained for quench dynamics in the staggered XXZ antiferromagnetic chain in the flat-band limit, validated by IBM-Q simulations.
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Probing Quantum Information Scrambling via Local Randomized Measurements
Averaged accessible information under Haar-random local measurements is a function of local purity and distinguishes dynamical confinement, ballistic transport, scar revivals, and many-body localization in quantum many-body systems.
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Quench dynamics of the quantum XXZ chain with staggered interactions: Exact results and simulations on digital quantum computers
Exact closed-form size-independent expressions for von Neumann and Rényi entanglement entropies plus Loschmidt echoes are obtained for quench dynamics in the staggered XXZ antiferromagnetic chain in the flat-band limit, validated by IBM-Q simulations.