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Interactions and excitation blockade of Rydberg macrodimers

  • Dhiya Varghese
  • Rejish Nath
  • Simon Hollerith
  • Valentin Walther
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Abstract

We present a theoretical study of interactions between Rydberg macrodimers, molecular bound states of Rydberg atoms, and the largest known neutral homonuclear diatomic molecules. Accounting for the large number of molecular interaction channels from four interacting Rydberg atoms, we show that macrodimer-macrodimer interactions are anisotropic and similar in strength and range to atomic-state Rydberg interactions. Our analysis reveals the presence of two-atom, three-atom, and four-atom contributions in the bimolecular system, and elucidates how these interactions are rooted in the underlying atomic Rydberg-state couplings. Our calculations of the excitation blockade between macrodimers are in reasonable agreement with experimentally observed signals, and pave the way for the exploration of optically controlled collective quantum dynamics in molecular systems.

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Cite

BibTeXRIS
BibTeX
@misc{varghese2026interactions,
  title = {{Interactions and excitation blockade of Rydberg macrodimers}},
  author = {Dhiya Varghese and Rejish Nath and Simon Hollerith and Valentin Walther},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.15644},
  eprint = {2609.15644},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.15644},
}
RIS
TY  - UNPB
TI  - Interactions and excitation blockade of Rydberg macrodimers
AU  - Dhiya Varghese
AU  - Rejish Nath
AU  - Simon Hollerith
AU  - Valentin Walther
PY  - 2026
DA  - 2026/09/14
PB  - arXiv
DO  - 10.48550/arxiv.2609.15644
UR  - https://arxiv.org/abs/2609.15644
AB  - We present a theoretical study of interactions between Rydberg macrodimers, molecular bound states of Rydberg atoms, and the largest known neutral homonuclear diatomic molecules. Accounting for the large number of molecular interaction channels from four interacting Rydberg atoms, we show that macrodimer-macrodimer interactions are anisotropic and similar in strength and range to atomic-state Rydberg interactions. Our analysis reveals the presence of two-atom, three-atom, and four-atom contributions in the bimolecular system, and elucidates how these interactions are rooted in the underlying atomic Rydberg-state couplings. Our calculations of the excitation blockade between macrodimers are in reasonable agreement with experimentally observed signals, and pave the way for the exploration of optically controlled collective quantum dynamics in molecular systems.
ER  -