Dartmouth Events

Abstract: How a many-body quantum system thermalizes under its own interaction is an important question that interconnects various different communities, ranging from quantum information science, to condensed matter physics, to quantum engineering. Nuclear spins in solids, featuring large system size, long coherence time and excellent controllability, provide a great playground for quantum thermalization studies. In this seminar I will present three recent experiments in this area. (1) With only global control and observables, we design a novel sequence enabling measurement of local correlations and observe various classical hydrodynamical phenomena emerged from thermalizing quantum systems. (2) We observe prethermalization in periodically driven systems by measuring both time-ordered correlators [1,2] and out-of-time ordered correlators [3]. Our results demonstrate robust Floquet engineering, thus enabling the experimental observation of dynamical phases of matter.

 

References

[1] PP, C. Yin, X. Huang, C. Ramanathan, P. Cappellaro. Nat. Phys. 17, 444 (2021).

[2] C. Yin, PP, X. Huang, C. Ramanathan, P. Cappellaro. Phys. Rev. B 103, 054305 (2021).

[3] K.X. Wei, PP, O. Shtanko, I. Marvian, S. Lloyd, C. Ramanathan, P. Cappellaro. Phys. Rev. Lett. 123, 090605 (2019).