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Article Dans Une Revue PRX Quantum Année : 2022

Experimentally Accessible Scheme for a Fractional Chern Insulator in Rydberg Atoms

Résumé

We present a setup with Rydberg atoms for the realization of a bosonic fractional Chern insulator in artificial matter. The suggested setup relies on Rydberg atoms arranged in a honeycomb lattice, where excitations hop through the lattice by dipolar exchange interactions and can be interpreted as hard-core bosons. The quantum many-body Hamiltonian is studied within exact diagonalization and the density-matrix renormalization group. We identify experimentally accessible parameters where all signatures indicate the appearance of a fractional state with the same topological properties as the ν=1/2 bosonic Laughlin state. We demonstrate an adiabatic ramping procedure, which allows for the preparation of the topological state in a finite system, and demonstrate an experimentally accessible smoking-gun signature for the fractional excitations.

Dates et versions

hal-03578924 , version 1 (17-02-2022)

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Citer

Sebastian Weber, Rukmani Bai, Nastasia Makki, Johannes Mögerle, Thierry Lahaye, et al.. Experimentally Accessible Scheme for a Fractional Chern Insulator in Rydberg Atoms. PRX Quantum, 2022, 3 (3), pp.030302. ⟨10.1103/PRXQuantum.3.030302⟩. ⟨hal-03578924⟩
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