Perturbed random Floquet-Clifford circuits exhibit operator-space fragmentation into wall-separated sectors for p < 1, yielding exact local integrals of motion, tunable operator spreading length, an entanglement bottleneck, and a pre-RMT fragmentation timescale at p = 1.
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The minimal distance of a correlation to the local set lower-bounds the minimal distance of the state to the separable set, yielding bounds on entanglement measures from arbitrary nonlocal correlations in general Bell scenarios.
In the variable-range Ising model, correlations are algebraic up to distance Z then exponential, while entanglement scales as Z^{-γ} at criticality independent of partition size and α>1.
Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.
Optimal weak-measurement reversal for entanglement protection does not coincide with optimal teleportation fidelity under single-sided amplitude damping, but the optima coincide under two-sided damping.
WYSI detects quantum phase transitions in the Heisenberg XYZ chain with DM interaction, revealing a factorization volume in the gapless chiral phase and a three-phase diagram.
citing papers explorer
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Operator space fragmentation in perturbed Floquet-Clifford circuits
Perturbed random Floquet-Clifford circuits exhibit operator-space fragmentation into wall-separated sectors for p < 1, yielding exact local integrals of motion, tunable operator spreading length, an entanglement bottleneck, and a pre-RMT fragmentation timescale at p = 1.
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Lower-bounding entanglement with nonlocality in a general Bell's scenario
The minimal distance of a correlation to the local set lower-bounds the minimal distance of the state to the separable set, yielding bounds on entanglement measures from arbitrary nonlocal correlations in general Bell scenarios.
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Scaling of entanglement entropy and correlations in the variable-range extended Ising model
In the variable-range Ising model, correlations are algebraic up to distance Z then exponential, while entanglement scales as Z^{-γ} at criticality independent of partition size and α>1.
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Multipartite entanglement structure of monitored quantum circuits
Monitored random quantum circuits lack divergent multipartite entanglement at criticality unlike standard critical systems, but two-site measurements with a protection mechanism enable genuinely multipartite entangled phases.
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Incompatibility of optimized protection of entanglement and teleportation fdelity in the presence of decoherence
Optimal weak-measurement reversal for entanglement protection does not coincide with optimal teleportation fidelity under single-sided amplitude damping, but the optima coincide under two-sided damping.
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Criticality and factorization in the Heisenberg chain with Dzyaloshinskii-Moriya interaction
WYSI detects quantum phase transitions in the Heisenberg XYZ chain with DM interaction, revealing a factorization volume in the gapless chiral phase and a three-phase diagram.