Fig. 6: Dephasing dynamics.
From: Exponentially-enhanced quantum sensing with many-body phase transitions
(Top row) Grover model with: (a) scaling of critical QFI \({F}_{c}^{Q}\) for various decoherence strength γ; and (b) \({F}_{c}^{Q}\) as a function of γ at a fixed system size L = 30. (Middle row) p-spin model with: (c) scaling of \({F}_{c}^{Q}\) for various γ; and (d) \({F}_{c}^{Q}\) as a function of γ at L = 10. (Bottom row) biclique spin system (J = 1, WA = 4J, and WB = 3.5J) with: (e) scaling of \({F}_{c}^{Q}\) for various γ; and (f) \({F}_{c}^{Q}\) as a function of γ at L = 11.
