English

Robust optimal control of interacting multi-qubit systems for quantum sensing

Quantum Physics 2021-10-26 v1

Abstract

Realising high fidelity entangled states in controlled quantum many-body systems is challenging due to experimental uncertainty in a large number of physical quantities. We develop a robust optimal control method for achieving this goal in finite-size multi-qubit systems despite significant uncertainty in multiple parameters. We demonstrate its effectiveness in the generation of the Greenberger-Horne-Zeilinger state on a star graph of capacitively coupled transmons, and discuss its crucial role for achieving the Heisenberg limit of precision in quantum sensing.

Keywords

Cite

@article{arxiv.2110.12560,
  title  = {Robust optimal control of interacting multi-qubit systems for quantum sensing},
  author = {Nguyen H. Le and Max Cykiert and Eran Ginossar},
  journal= {arXiv preprint arXiv:2110.12560},
  year   = {2021}
}

Comments

6 pages, 4 figures

R2 v1 2026-06-24T07:08:37.371Z