Quantum many-body dynamics for fermionic t-J model simulated with atom arrays

TL;DR

This paper proposes a highly-tunable simulation of the fermionic t-J model using Rydberg-dressed atom arrays, enabling exploration of complex quantum many-body dynamics relevant to high-temperature superconductivity.

Contribution

It introduces a novel scheme to realize a controllable extended t-J model with independent tuning of parameters in atom arrays, surpassing previous simulation capabilities.

Findings

Prediction of a many-body self-pinning effect due to local quantum entanglement

Observation of nonthermal quantum dynamics violating eigenstate thermalization hypothesis

Demonstration of simulation potential for high-Tc physics in neutral atom systems

Abstract

The fermionic t-J model has been widely recognized as a canonical model for broad range of strongly correlated phases, particularly the high-Tc superconductor. Simulating this model with controllable quantum platforms offers new possibilities to probe high-Tc physics, yet suffering challenges. Here we propose a novel scheme to realize a highly-tunable extended t-J model in a programmable Rydberg-dressed tweezer array. Through engineering the Rydberg-dressed dipole-dipole interaction and inter-tweezer couplings, the fermionic t-J model with independently tunable exchange and hopping couplings is achieved. With the high tunability, we explore quantum many-body dynamics in the large J/t limit, a regime well beyond the conventional optical lattices and cuprates, and predict an unprecedented many-body self-pinning effect enforced by local quantum entanglement with emergent conserved quantities. The self-pinning effect leads to novel nonthermal quantum many-body dynamics, which violates eigenstate thermalization hypothesis in Krylov subspace. Our prediction opens a new horizon in exploring exotic quantum many-body physics with t-J model, and shall also make a step towards simulating the high-Tc physics in neutral atom systems.