PIRSA:25110078

Exploring Quantum Dynamics via Spacetime and Holographic Dualities

Lu, P. (2025). Exploring Quantum Dynamics via Spacetime and Holographic Dualities. Perimeter Institute. https://pirsa.org/25110078

Lu, Peter. Exploring Quantum Dynamics via Spacetime and Holographic Dualities. Perimeter Institute, Nov. 19, 2025, https://pirsa.org/25110078 

          @misc{ pirsa_PIRSA:25110078,
            doi = {10.48660/25110078},
            url = {https://pirsa.org/25110078},
            author = {Lu, Peter},
            keywords = {Quantum Information},
            language = {en},
            title = {Exploring Quantum Dynamics via Spacetime and Holographic Dualities},
            publisher = {Perimeter Institute},
            year = {2025},
            month = {nov},
            note = {PIRSA:25110078 see, \url{https://pirsa.org}}
          }

Tsung-Cheng Lu (Peter) University of Maryland, College Park

Talk numberPIRSA:25110078
DOI10.48660/25110078
Collection
Talk Type Scientific Series
Subject

Abstract

Recent advancements in near-term quantum devices have opened new avenues for exploring quantum phenomena in controllable settings. These developments, in turn, motivate new theoretical perspectives on the dynamics of many-body systems. In the first part of the talk, I will discuss our recent progress on quantum state preparation. I will show that two primary classes of low-overhead circuits for preparing long-range entangled states—sequential unitary circuits and measurement-feedback circuits—can be unified through a simple spacetime rotation, revealing an unexpected connection between the two seemingly distinct protocols. In the second part, motivated by the inevitability of decoherence in realistic quantum systems, I will turn to many-body mixed states and discuss a novel phenomenon: strong-to-weak spontaneous symmetry breaking. I will show how these symmetry-breaking patterns naturally emerge on the spatial boundary of bulk topological orders in one higher dimension, thereby uncovering an intriguing holographic duality.