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Quantum Many-Body Dynamics for Fermionic t-J Model Simulated with Atom Arrays
Ye-Bing Zhang1,2, Xin-Chi Zhou1,2, Bao-Zong Wang1,2
1Peking University, International Center for Quantum Materials and School of Physics, Beijing 100871, China.
Physical Review Letters
|February 6, 2026
Summary
Researchers developed a new method to simulate the fermionic t-J model using Rydberg-dressed atoms. This approach reveals a novel self-pinning effect in quantum many-body dynamics, offering insights into high-temperature superconductivity.
Area of Science:
- Quantum Simulation
- Condensed Matter Physics
- Atomic Physics
Background:
- The fermionic t-J model is crucial for understanding strongly correlated systems, especially high-temperature superconductors.
- Simulating this model presents significant challenges for current quantum platforms.
- Exploring high-temperature superconductivity requires advanced simulation techniques.
Purpose of the Study:
- To propose a novel scheme for realizing a highly tunable extended t-J model.
- To investigate quantum many-body dynamics in the large J/t limit.
- To explore exotic quantum phenomena beyond conventional systems.
Main Methods:
- Utilizing a programmable Rydberg-dressed tweezer array.
- Engineering Rydberg-dressed dipole-dipole interactions and inter-tweezer couplings.
- Achieving independently tunable exchange (J) and hopping (t) couplings.
Main Results:
- Successfully realized a tunable fermionic t-J model.
- Predicted an unprecedented many-body self-pinning effect in the large J/t regime.
- Observed novel nonthermal quantum many-body dynamics violating the eigenstate thermalization hypothesis.
Conclusions:
- The proposed scheme opens new avenues for exploring exotic quantum many-body physics with the t-J model.
- This work represents a significant step towards simulating high-temperature superconductivity in neutral atom systems.
- The predicted self-pinning effect offers a new paradigm for understanding quantum dynamics.
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