Optimal Quantum Control of Multimode Couplings between Trapped Ion Qubits for Scalable Entanglement
Taeyoung Choi, Shantanu Debnath, T. Andrew Manning, Caroline Figgatt, Zhexuan Gong, Luming Duan, Christopher R. Monroe · Physical Review Letters · 2014
We demonstrate entangling quantum gates within a chain of five trapped ion qubits by optimally shaping optical fields that couple to multiple collective modes of motion. We individually address qubits with segmented optical pulses to construct multipartite entangled states in a programmable way. This approach enables high-fidelity gates that can be scaled to larger qubit registers for quantum computation and simulation.