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quant-ph2026

Operator delocalization in disordered spin chains via exact MPO marginals

Jonnathan Pineda, Mario Collura, Gianluca Passarelli +3

We investigate operator delocalization in disordered one-dimensional spin chains by introducing -- besides the already known operator mass -- a complementary measure of operator co…

quant-ph2026

Range-controlled entanglement in Lindbladian skin states of monitored fermions

Gianluca Passarelli, Angelo Russomanno, Davide Rossini +1

Reservoir engineering can stabilize states inaccessible to unitary dynamics. Directed particle-conserving dissipation creates Lindbladian skin states, where Pauli exclusion turns e…

quant-ph2025

Entanglement behavior and localization properties in monitored fermion systems

Giulia Piccitto, Giuliano Chiriacò, Davide Rossini +1

We study the asymptotic bipartite entanglement in various integrable and nonintegrable models of monitored fermions. We find that, for the integrable cases, the entanglement versus…

quant-ph2025

Nonstabilizerness in the unitary and monitored quantum dynamics of XXZ-staggered and SYK models

Angelo Russomanno, Gianluca Passarelli, Davide Rossini +1

We consider the quantum-state-diffusion dynamics of the XXZ-staggered spin chain, also focusing on its noninteracting XX-staggered limit, and of the Sachdev-Ye-Kitaev (SYK) model.…

quant-ph2025

Chaos and magic in the dissipative quantum kicked top

Gianluca Passarelli, Procolo Lucignano, Davide Rossini +1

We consider an infinite-range interacting quantum spin-1/2 model, undergoing periodic kicking and dissipatively coupled with an environment. In the thermodynamic limit, it is descr…