Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation
Markus Duwe, Giorgio Zarantonello, Nicolas Pulido-Mateo, H. Mendpara, Ludwig Krinner, A. Bautista-Salvador, Nikolay V. Vitanov, Klemens Hammerer, Reinhard F. Werner, C. Ospelkaus · Quantum Science and Technology · 2022
Abstract Microwave control of trapped ions can provide an implementation of high-fidelity two-qubit gates free from errors induced by photon scattering. Furthermore, microwave conductors may be embedded into a scalable trap structure, providing the chip-level integration of control that is desirable for scaling. Recent developments have demonstrated how amplitude modulation of the gate drive can permit a two-qubit entangling operation to become robust against motional mode noise and other experimental imperfections. Here, we discuss a method for the numerical optimization of the microwave pulse envelope to produce gate pulses with noise resilience, considerably faster operation and high energy efficiency.