Universal Set of Gates for Microwave Dressed-State Quantum Computing

TL;DR

This paper introduces a universal set of quantum gates using dressed states, enhancing robustness against magnetic noise in trapped ion systems with long-wavelength radiation, and potentially applicable to other bosonic mode-based quantum systems.

Contribution

It presents a novel technique for implementing universal quantum gates with dressed states, improving noise resilience in trapped ion quantum computing.

Findings

Enables robust single and multi-qubit gates despite magnetic noise

Uses dressing fields to enhance coupling in trapped ions

Provides a general approach for noise shielding in quantum systems

Abstract

We propose a set of techniques that enable universal quantum computing to be carried out using dressed states. This applies in particular to the effort of realising quantum computation in trapped ions using long-wavelength radiation, where coupling enhancement is achieved by means of static magnetic-field gradient. We show how the presence of dressing fields enables the construction of robust single and multi-qubit gates despite the unavoidable presence of magnetic noise, an approach that can be generalised to provide shielding in any analogous quantum system that relies on the coupling of electronic degrees of freedom via bosonic modes.