Li, X. X., You, J. B., Shao, X. Q., & Li, W. (2022). Coherent ground-state transport of neutral atoms. Physical Review A, 105(3). https://doi.org/10.1103/physreva.105.032417
Abstract:
Quantum state transport is an important way to study the energy or information flow. By combining the unconventional Rydberg pumping mechanism and the diagonal form of van der Waals interactions, we construct a theoretical model via second-order perturbation theory to realize a long-range coherent transport inside the ground-state manifold of neutral atoms system. With the adjustment of the Rabi frequencies and the interatomic distance, this model can be used to simulate various single-excitation dynamics such as Heisenberg XX spin chain, perfect quantum state transfer, Su-Schrieffer-Heeger model, and chiral ground-state current, which effectively avoid the influence of atomic spontaneous emission at the same time. Moreover, the mismatch of the unconventional Rydberg pumping condition caused by the fluctuation of the atomic position only affects the period of quantum state transfer but not the fidelity of state. Therefore, our work provides a simple and easy-implemented scheme for potential experiments on quantum-state engineering of neutral atoms.
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Funding Info:
This research / project is supported by the National Research Foundation Singapore - Quantum Engineering Programme
Grant Reference no. : QEP-SF1
This research / project is supported by the A*STAR - Career Development Award
Grant Reference no. : SC23/21-8007EP
National Natural Science Foundation of China (NSFC) under Grants No. 11774047