Stabilizer entropy dynamics after a quantum quench
Autor: | Rattacaso, Davide, Leone, Lorenzo, Oliviero, Salvatore F. E., Hamma, Alioscia |
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Rok vydání: | 2023 |
Předmět: | |
Zdroj: | Phys. Rev. A 108, 042407 (2023) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevA.108.042407 |
Popis: | Stabilizer entropies (SE) measure deviations from stabilizer resources and as such are a fundamental ingredient for quantum advantage. In particular, the interplay of SE and entanglement is at the root of the complexity of classically simulating quantum many-body systems. In this paper, we study the dynamics of SE in a quantum many-body system away from the equilibrium after a quantum quench in an integrable system. We obtain two main results: (i) we show that SE, despite being an L-extensive quantity, equilibrates in a time that scales at most linearly with the subsystem size; and (ii) we show that there is a SE length increasing linearly in time, akin to correlations and entanglement spreading. Comment: 13 pages, 9 figures |
Databáze: | arXiv |
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