Extended Data Fig. 9: Spin-locking sequence measurement.
From: Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition
a, Spin-locking sequence. After initializing the spin ensemble along the y-axis via the initial π/2 pulse, a continuous drive along the y-axis with strength Ωy is applied for duration T to lock the spin orientation. The final π/2 analyzer pulse with a variable phase angle θ is employed for coherence extraction. b, Decoherence dynamics of the spin ensemble under the spin-locking sequence for large J (blue) and small J (orange) cases. Error bars represent the standard deviation of the experimental data (see Methods for details). The solid lines are single exponential fits used to extract the 1/e decay times, T1/e, yielding T1/e ≈ 50 μs and T1/e ≈ 73 μs for the large J and small J cases, respectively.
