Engineering protected cavity-QED interactions through pulsed dynamical decoupling
We study a generic cavity QED setup under conditions where the coupling between the two-level systems and a single bosonic mode is significantly degraded by low-frequency noise. To overcome this problem, we identify pulsed dynamical decoupling strategies that suppress the effects of noise while still allowing for a coherent exchange of excitations between the individual subsystems. The corresponding pulse sequences can be further designed to realize either Jaynes-Cummings, anti-Jaynes-Cummings, or Rabi couplings, as well as different types of cavity-mediated interactions between the two-level systems. A detailed analysis of the residual imperfections demonstrates that this decoupling strategy can boost the effective cooperativity of the cavity QED system by several orders of magnitude and improve the fidelity of quantum-technologically relevant operations accordingly.
Authors
- Yiwen Chu (ORCID: https://orcid.org/0000-0001-5042-3130)
- Peter Rabl (ORCID: https://orcid.org/0000-0002-2560-8835)
- Patrice Bertet (ORCID: https://orcid.org/0000-0002-5427-7254)
- I. Arrazola
Institutions
- Bavarian Academy of Sciences and Humanities (DE)
- Centre National de la Recherche Scientifique (FR)
- University of the Basque Country (ES)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- ETH Zurich (CH)
- CEA Paris-Saclay (FR)
- Munich Center for Quantum Science and Technology (DE)
- Technical University of Munich (DE)
- Universidad Autónoma de Madrid (ES)
Publication Details
- Journal
- npj Quantum Information
- Published
- 2025-11-21
- DOI
- https://doi.org/10.1038/s41534-025-01143-5
- Primary Topic
- Quantum Information and Cryptography
- Type
- article
- Field-Weighted Citation Impact
- 0.00