2–8 Nov 2025
TIFR Mumbai
Asia/Kolkata timezone

Measurement-Induced Entanglement Dynamics in a Z₂ Lattice Gauge Theory

3 Nov 2025, 17:40
20m
AG80

AG80

Speaker

Nisa Ara (Tata Institute of Fundamental Research, Mumbai)

Description

Quantum simulations of fundamental gauge theories require a thorough understanding of non-unitary dynamics that arise from interactions with an environment, including measurements. This talk focuses on the one-dimensional Z₂ gauge theory, a foundational model for probing such effects. Using tensor network calculations, we investigate the dynamics of entanglement entropy when physical observables are measured at varying rates. We further demonstrate that the interplay between unitary evolution and projective measurements gives rise to distinct behaviours in the weak and strong coupling regimes. Specifically, we show that for a fixed measurement rate, the late-time entanglement entropy saturates to different, characteristic values in each regime. These findings reveal signatures of measurement-induced effects and provide crucial insights for benchmarking and interpreting results from near-term quantum simulators.

Parallel Session (for talks only) Quantum computing and quantum information

Author

Nisa Ara (Tata Institute of Fundamental Research, Mumbai)

Co-authors

Prof. Arpan Bhattacharyya (IIT, Gandhinagar) Indrakshi Raychowdhury (Department of Physics, BITS Pilani, KK Birla Goa Campus) Ms Neha Nirbhan (IIT, Gandhinagar) Mr Nilachal Chakrabarti (IIT, Gandhinagar)

Presentation materials

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