Accurate Mapping of Multilevel Rydberg Atoms on Interacting Spin-1/2 Particles for the Quantum Simulation of Ising Models

作者：de Leseleuc Sylvain; Weber Sebastian; Lienhard Vincent^*; Barredo Daniel; Buechler Hans Peter; Lahaye Thierry; Browaeys Antoine

来源：Physical Review Letters, 2018, 120(11): 113602.

DOI：10.1103/PhysRevLett.120.113602

We study a system of atoms that are laser driven to nD(3/2) Rydberg states and assess how accurately they can be mapped onto spin-1/2 particles for the quantum simulation of anisotropic Ising magnets. Using nonperturbative calculations of the pair potentials between two atoms in the presence of electric and magnetic fields, we emphasize the importance of a careful selection of experimental parameters in order to maintain the Rydberg blockade and avoid excitation of unwanted Rydberg states. We benchmark these theoretical observations against experiments using two atoms. Finally, we show that in these conditions, the experimental dynamics observed after a quench is in good agreement with numerical simulations of spin-1/2 Ising models in systems with up to 49 spins, for which numerical simulations become intractable.

• 出版日期2018-3-16