Figure 1From: Efficient quantum simulation of fermionic and bosonic models in trapped ionsQuantum simulations with trapped ions. (a) Scheme of a rf Paul trap for digital-analog quantum simulations. Energy-level scheme for optical qubits (b), and rf qubits (c). In addition to the qubit levels |0〉 and |1〉, a third level is used for qubit readout.Back to article page