Programmable all-to-all entangling gates for cavity-coupled atoms

@misc{crookes2026programmable,
  title = {{Programmable all-to-all entangling gates for cavity-coupled atoms}},
  author = {Angus Crookes and Ben Yuen and Angela Demetriadou},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.22220},
  eprint = {2610.22220},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.22220},
}

TY  - UNPB
TI  - Programmable all-to-all entangling gates for cavity-coupled atoms
AU  - Angus Crookes
AU  - Ben Yuen
AU  - Angela Demetriadou
PY  - 2026
DA  - 2026/10/15
PB  - arXiv
DO  - 10.48550/arxiv.2610.22220
UR  - https://arxiv.org/abs/2610.22220
AB  - Fault tolerant quantum computers greatly benefit from having both high fidelity entangling gates and a non-local qubit connectivity. However, most entangling gates for neutral atoms are local, requiring separated atoms to be moved using optical tweezers to yield entanglement between them. Here, we design a high fidelity Mølmer Sørensen-like entangling gate between neutral atoms coupled to a photonic cavity, enabling a programmable all-to-all connectivity through the shared cavity coupling. The gate is both robust to changes in cavity photon number, and enables selective entanglement between any subset of separated atoms through local laser addressing. This eliminates the need to physically move atoms to perform the gate, and therefore motional errors and erasure are suppressed. Using experimentally realistic parameters we demonstrate gate fidelities exceeding F > 0.99, with higher fidelities achievable through optimal control of the pump amplitudes.
ER  -