Robust high-fidelity universal set of quantum gates through non-adiabatic rapid passage

TL;DR

This paper presents a method to implement a universal set of quantum gates with high fidelity and robustness using non-adiabatic rapid passage, optimized for practical experimental realization.

Contribution

The authors demonstrate a single control scheme for universal quantum gates achieving high fidelity and robustness with realistic control precision requirements.

Findings

Gate fidelities between 0.99988 and 0.99999

Control parameters require no more than 14-bit precision

Implementation is feasible with current waveform generators

Abstract

We show how a robust high-fidelity universal set of quantum gates can be implemented using a single form of non-adiabatic rapid passage whose parameters are optimized to maximize gate fidelity and reward gate robustness. Each gate in the universal set is found to operate with a fidelity F in the range 0.99988 < F < 0.99999, and to require control parameters with no more than 14-bit (1 part in 10,000) precision. Such precision is within reach of commercially available arbitrary waveform generators, so that an experimental study of this approach to high-fidelity universal quantum control appears feasible.