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PreprintarXiv licencearXiv

An exchange-assisted entangling gate between 87Rb and 171Yb Rydberg atoms

  • Han Wang
  • Erdong Huang
  • Mingrui Jing
  • Hongshun Yao
  • Xin Wang
  • Jinguo Liu
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Abstract

Neutral-atom tweezer arrays support scalable quantum information processing. Dual-species 87Rb--171Yb arrays combine long-lived ytterbium nuclear-spin data qubits with fast, species-selective rubidium ancilla control and readout. However, realizing interspecies gates without inducing destructive Stark mixing in divalent atoms remains an outstanding problem. Here, we identify an optically accessible S+S↔ P+P Förster resonance at zero electric field, providing strong dipole-dipole exchange at array pitch. Using a shaped optical pulse under finite control response, we demonstrate a 0.36 μs exchange-assisted controlled-Z gate with an intrinsic fidelity of 99.91%, remaining above 99.85% under bounded perturbations. We also identify an auxiliary repulsive van der Waals channel, providing a comprehensive toolbox for hybrid quantum processors.

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Cite

BibTeXRIS
BibTeX
@misc{wang2026exchangeassisted,
  title = {{An exchange-assisted entangling gate between 87Rb and 171Yb Rydberg atoms}},
  author = {Han Wang and Erdong Huang and Mingrui Jing and Hongshun Yao and Xin Wang and Jinguo Liu},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.11730},
  eprint = {2609.11730},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.11730},
}
RIS
TY  - UNPB
TI  - An exchange-assisted entangling gate between 87Rb and 171Yb Rydberg atoms
AU  - Han Wang
AU  - Erdong Huang
AU  - Mingrui Jing
AU  - Hongshun Yao
AU  - Xin Wang
AU  - Jinguo Liu
PY  - 2026
DA  - 2026/09/10
PB  - arXiv
DO  - 10.48550/arxiv.2609.11730
UR  - https://arxiv.org/abs/2609.11730
AB  - Neutral-atom tweezer arrays support scalable quantum information processing. Dual-species ^87Rb--^171Yb arrays combine long-lived ytterbium nuclear-spin data qubits with fast, species-selective rubidium ancilla control and readout. However, realizing interspecies gates without inducing destructive Stark mixing in divalent atoms remains an outstanding problem. Here, we identify an optically accessible S+S↔ P+P Förster resonance at zero electric field, providing strong dipole-dipole exchange at array pitch. Using a shaped optical pulse under finite control response, we demonstrate a 0.36 μs exchange-assisted controlled-Z gate with an intrinsic fidelity of 99.91%, remaining above 99.85% under bounded perturbations. We also identify an auxiliary repulsive van der Waals channel, providing a comprehensive toolbox for hybrid quantum processors.
ER  -