Group Seminar via Zoom: NMR studies of quantum thermalization

Pai Peng, MIT
Group Seminar via video conference (Zoom)
Tuesday, October 12, 3:00 p.m (MEZ)

Due to the Covid-19 pandemic, the group seminar will be a hybrid event, allowing participants to attend the seminar virtually and in-person. This procedure enables us to continue our research, enhance discussions and exchange important information.

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) classical hydrodynamical phenomena emerged from thermalizing quantum systems; (2) prethermalization in periodically driven systems [1-3]; (3) robust dynamical decoupling of interactions using reinforcement learning techniques [4]. The results not only shine a light on various important questions in quantum thermalization, but also provide new quantum control techniques that can be generalized to other platforms.
 
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).
[4] PP, X. Huang, C. Yin, L. Joseph, C. Ramanathan, P. Cappellaro. arXiv:2102.13161.

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