Twinned Dynamical Decoupling
Abstract
Systematic pulse-area errors limit the fidelity of quantum control across many qubit platforms. We introduce twinned dynamical decoupling (TDD), an analytic family of sequences in which a pulse sequence is paired with its -phase-shifted twin. This -phase step cancels common-mode systematic pulse-area errors to all orders on exact resonance. Then the phases of the pulses in each of the constituent twins are determined in such a manner that detuning errors are suppressed to the highest possible order as well. We have derived a simple analytic formula for these phases applicable to arbitrary sequence length. We demonstrate the sequences with superconducting transmon qubits on the IBM Quantum processor ibmtorino and the IQM Quantum processor Garnet. The measured population plateaus agree closely with theory and show enhanced robustness compared to the most frequently used dynamical decoupling protocols.
Cite
@article{arxiv.2510.17692,
title = {Twinned Dynamical Decoupling},
author = {Nayden P. Nedev and Nikolay V. Vitanov},
journal= {arXiv preprint arXiv:2510.17692},
year = {2026}
}