Coherent control of a local phonon in trapped ions using dynamical decoupling

TL;DR

This paper introduces a dynamical decoupling method to coherently control a single local phonon in trapped ions, enabling precise manipulation of phonon states for quantum information processing.

Contribution

The work demonstrates a novel dynamical decoupling technique using blue-sideband pulses to control local phonons in trapped ions, enhancing quantum control capabilities.

Findings

Successful implementation of DD with single and multiple pulses

Flipping phonon states via 2π rotation at motional sideband

Potential for engineering phonon mode coupling

Abstract

In this paper, we present a dynamical decoupling (DD) technique to coherently control the dynamics of a single local phonon in trapped ions. A 2$\pi$ rotation at a motional sideband transition flips the sign of the relevant local phonon state, resulting in cancellation of the phonon dynamics. In this work, we implement DD using single and multiple blue-sideband pulses to control a single local phonon in two $^{40}{\rm Ca}^{+}$ ions in a linear Paul trap. Our proposed DD technique can be used to engineer coupling between local phonon modes.