Mobile bound states of Rydberg excitations in a lattice

Abstract

Spin lattice models play central role in the studies of quantum magnetism and non-equilibrium dynamics of spin excitations -- magnons. We show that a spin lattice with strong nearest-neighbor interactions and tunable long-range hopping of excitations can be realized by a regular array of laser driven atoms, with an excited Rydberg state representing the spin-up state and a Rydberg-dressed ground state corresponding to the spin-down state. We find exotic interaction-bound states of magnons that propagate in the lattice via the combination of resonant two-site hopping and non-resonant second-order hopping processes. Arrays of trapped Rydberg-dressed atoms can thus serve as a flexible platform to simulate and study fundamental few-body dynamics in spin lattices.

13 pages, 8 figures

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Cited by in corpus (12)

• A concise review of Rydberg atom based quantum computation and quantum simulation
• Realization of an extremely anisotropic Heisenberg magnet in Rydberg atom arrays
• Manipulating synthetic gauge fluxes via multicolor dressing of Rydberg-atom arrays
• Quantum Transport of Rydberg Excitons with Synthetic Spin-Exchange Interactions
• Dynamical hadron formation in long-range interacting quantum spin chains
• Coherent ground-state transport of neutral atoms
• Emergence of solitons from many-body photon bound states in quantum nonlinear media
• Discrete-Time Quantum-Walk & Floquet Topological Insulators via Distance-Selective Rydberg-Interaction
• Dynamics of Rydberg excitations and quantum correlations in an atomic array coupled to a photonic crystal waveguide
• Chiral quantum router with Rydberg atoms
• Decay rates and energies of free magnons and bound states in dissipative XXZ chains
• Confinement and oscillating deconfinement crossover of two-magnon excitations in quantum spin chains quantified by spin entanglement entropy