Dynamical quantum phase transitions in free-fermion quantum batteries produce nonanalytic singularities in long-time stored energy by making critical momentum modes charge perfectly at specific times.
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Ergotropy in the battery corresponds one-to-one with total nonstabilizerness under U(1)-symmetric charger-battery interactions, while maximum average charging power in Clifford evolution is achievable even with zero initial magic.
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Dynamical Criticality Behind Energy-Storage Singularities in Quantum Batteries
Dynamical quantum phase transitions in free-fermion quantum batteries produce nonanalytic singularities in long-time stored energy by making critical momentum modes charge perfectly at specific times.
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Interplay of Nonstabilizerness and Ergotropy in Quantum Batteries
Ergotropy in the battery corresponds one-to-one with total nonstabilizerness under U(1)-symmetric charger-battery interactions, while maximum average charging power in Clifford evolution is achievable even with zero initial magic.