Public Research Seminar by Advanced Materials Thrust, Function Hub, HKUST(GZ) - Solvable entanglement dynamics with space-time duality

Understanding quantum many-body systems far-from-equilibrium is an important but challenging problem, finding relevance in condensed matter, high-energy, and quantum information. Solvable models of quantum dynamics are therefore desirable, but rare. Here we introduce a family of quantum circuits whose entanglement dynamics is exactly solvable, leveraging new ideas of dualities between space-time known as generalized dual-unitarity. We find rich phenomenology ranging from universal quantum chaotic behavior, to conceptually novel non-chaotic yet non-integrable dynamics. Our work extends our knowledge of different classes of interacting quantum dynamics, and provides analytical testbeds to probe interesting physical phenomena like quantum thermalization and information scrambling.

Reference: https://arxiv.org/abs/2312.12239