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Dressed Interference in Giant Superatoms: Entanglement Generation and Transfer

Lei Du1, Xin Wang2, Anton Frisk Kockum1, and Janine Splettstoesser1

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Phys. Rev. Lett. 135, 223601 – Published 25 November, 2025

DOI: https://doi.org/10.1103/crzs-k718

Abstract

We introduce the concept of giant superatoms (GSAs), where two or more interacting atoms are nonlocally coupled to a waveguide through one of them, and explore their unconventional quantum dynamics. For braided GSAs, this setup enables decoherence-free transfer and swapping of their internal entangled states. For separate GSAs, engineering coupling phases leads to state-dependent chiral emission, which enables selective, directional quantum information transfer. This mechanism further facilitates remote generation of W-class entangled states. Our results thereby open exciting possibilities for quantum networks and quantum information processing.

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Phys. Rev. Lett. 135, 223601– Published 25 November, 2025
  • Received 24 April 2025
  • Accepted 3 November 2025
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by Bibsam.

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