Fig. 3: Sensing with biclique model.
From: Exponentially-enhanced quantum sensing with many-body phase transitions
a Energy gap scaling for the biclique spin system (Eq. (13)) at criticality occurring near θc = 0.05 with \({h}_{A[B]}=\left({L}_{B[A]}J-2\frac{{W}_{A[B]}}{{L}_{A[B]}}\right)\) with J = 1, WA = 0.49J and WB = 0.5J. b QFI scaling at criticality for this system.
