In a U(1)-broken XX spin chain the local quantum Fisher information shows no first-order depletion in the transverse field and drops at second order via two-magnon scattering, while a single-qubit decoder cannot recover the full block QFI due to subspace compression.
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Recurrence plots of two-site correlations in the quenched 1D transverse-field Ising model transition from periodic to multiscale structures across the ferromagnetic-to-paramagnetic transition, and recurrence quantifiers recover the critical field strength in an unsupervised manner.
A recipe for initial points in variational compression of quantum time-evolution operators that provably converges to near-optimal O(N t polylog(N t/ε)) gate complexity for local translationally invariant Hamiltonians.
Derives bounds on minimal transport time and maximal distance for bosons in dissipative long-range systems, showing distinctions by loss type and the enabling role of decoherence-free subspaces for long-distance perfect transport.
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Macroscopic Particle Transport in Dissipative Long-Range Bosonic Systems
Derives bounds on minimal transport time and maximal distance for bosons in dissipative long-range systems, showing distinctions by loss type and the enabling role of decoherence-free subspaces for long-distance perfect transport.