Robust dynamical decoupling for quantum computing and quantum memory

TL;DR

This paper develops a robust dynamical decoupling sequence for quantum computing and memory that withstands experimental errors, demonstrated through solid-state nuclear spin qubits, enhancing quantum information preservation.

Contribution

It introduces a new error-resistant DD sequence that maintains high decoupling efficiency in fluctuating environments, suitable for quantum computing and memory.

Findings

Experimental validation with solid-state nuclear spin qubits

The new DD sequence improves robustness against control errors

Enhanced preservation of quantum information in noisy settings

Abstract

Dynamical decoupling (DD) is a popular technique for protecting qubits from the environment. However, unless special care is taken, experimental errors in the control pulses used in this technique can destroy the quantum information instead of preserving it. Here, we investigate techniques for making DD sequences robust against different types of experimental errors while retaining good decoupling efficiency in a fluctuating environment. We present experimental data from solid-state nuclear spin qubits and introduce a new DD sequence that is suitable for quantum computing and quantum memory.