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Boundary-Driven Quantum Systems Near Zeno Limit - Steady States and Long-Time Behavior

Institute for Pure & Applied Mathematics (IPAM) via YouTube

Overview

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Explore boundary-driven quantum systems operating near the Zeno limit through this 49-minute conference talk examining steady states and long-time behavior. Delve into composite open quantum systems with finite-dimensional state spaces governed by Lindblad equations, where the dynamics simplify as the Zeno parameter approaches infinity. Learn how the system evolution can be approximated by a product state after an initial transient period, and discover the rigorous mathematical framework that extends previous work by assuming only ergodic and gapped dissipators. Examine the precise control of error terms and understand how mixing times of different Lindblad generators relate near the Zeno limit, while addressing the challenge that approximation errors accumulate over extended time periods. Investigate the introduction of a third Lindblad generator that provides better control over long-time behavior and steady states without involving the Zeno parameter. Analyze the conditions under which all generators become ergodic and gapped for large parameters, leading to convergent expansions of steady states with explicit mathematical formulations. Study the unique solution properties of the resulting equation systems and their convergence proofs, illustrated through concrete examples where explicit calculations are possible. Apply these theoretical results to practical state preparation problems in quantum systems, drawing from collaborative research in quantum dynamics and open system theory.

Syllabus

Eric Carlen - Boundary-driven quantum systems near Zeno limit: steady states and long-time behavior

Taught by

Institute for Pure & Applied Mathematics (IPAM)

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