Quantum Fisher Information as the Speed Limit for Multipartite Entanglement

arXiv:2609.31853 · quant-ph · Submitted 2026-09-25 · Read on arXiv

quant-ph

Submitted: 2026-09-25

Updated: 2026-09-25

Terminology

• Entanglement — 40× in this paper · explained in 4 episodes
• Multipartite Entanglement — 18× in this paper · explained in 2 episodes
• Fisher Information — 9× in this paper · explained in 3 episodes
• Phase Transitions — 6× in this paper · explained in 2 episodes
• Heisenberg Scaling — 2× in this paper · explained in 4 episodes
• Robustness — 2× in this paper · explained in 5 episodes
• Adam — 1× in this paper · explained in 2 episodes
• Alignment — 1× in this paper · explained in 1 episode
• Gradient Flow — 1× in this paper · explained in 2 episodes
• Higher-order derivatives — 1× in this paper · explained in 2 episodes
• Hilbert Space — 1× in this paper · explained in 2 episodes
• Quantum Fisher Information (QFI) — 1× in this paper · explained in 13 episodes

Sources

• Discontinuities of the quantum Fisher information and the Bures metric
• On the discontinuity of the quantum Fisher information for quantum statistical models with parameter dependent rank
• Information-Geometric Bound on the Robustness of Entanglement Generation
• Journey in quantum metrology and sensing from foundations to applications: a review
• Critical Quantum Sensing: a tutorial on parameter estimation near quantum phase transitions
• Review: Quantum Metrology and Sensing with Many-Body Systems

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