Jiangtian Yao

Wednesday 15 Apr 2026, 15:00 → 17:00 Europe/London

S7.06

Spreading of a globally-conserved quantum resource

 

Nonstabilizerness, or quantum magic, presents a valuable resource in quantum computation and plays a crucial role in generating complex many-body dynamics. In our recent work (arXiv: 2511.21487), we study the dynamics of locally injected magic in unitary Clifford circuits, where the total amount of magic is globally conserved yet no local conservation laws are known. We propose two operationally-motivated magic length scales and show that, at early times, both length scales grow ballistically at distinct velocities set by the entanglement velocity. We further demonstrate that at late times, magic delocalizes across the entire system. Our work provides insights on the spatiotemporal structure of quantum resources and complexity, motivating further investigations on their transport properties and connections with quantum information processing tasks.