A Protocol for Shielding-Enhanced Loading of Single Polar Molecules into Optical Tweezers
Abstract
We propose the high-fidelity preparation of single bosonic molecules in optical tweezers starting from small tweezer-trapped molecular ensembles. Our scheme combines a static electric field and a microwave field to generate strong, tunable, anisotropic interactions that shield the molecules against two-body collisional loss. We show that this shielding eliminates all long-range bound states, preventing three-body recombination. This elimination persists for all microwave ellipticities, including the experimentally practical limit of linear polarization. Application of an additional electric field gradient can be used to induce controlled spilling of strongly interacting molecules out of the trap until one remains. With realistic experimental parameters, we estimate that single tweezer-trapped NaCs molecules can be isolated from a pair with fidelities exceeding 99\%, and > 95% per site across an array. These results establish collisional shielding with electric fields as an effective tool for preparing highly-filled tweezer arrays of polar molecules.
Related
- Static-Field Shielding of Bosonic Molecules: Evaporation to Degeneracy and Self-Bound Droplets
- Interaction-enhanced photon blockade and Bell-state protection in microwave-shielded polar molecules
- Fast Single-Atom Preparation in Optical Tweezers via Rydberg Blockade
- Sub-Doppler cooling of trapped ions using optical tweezers
- Polariton tweezers
BibTeX
@misc{wang2026protocol,
title = {{A Protocol for Shielding-Enhanced Loading of Single Polar Molecules into Optical Tweezers}},
author = {Reuben R. W. Wang and Christian H. Nunez and Conner Williams and Amanda Younes and Li Du and H. R. Sadeghpour and Kang-Kuen Ni},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2608.20332},
eprint = {2608.20332},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2608.20332},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - A Protocol for Shielding-Enhanced Loading of Single Polar Molecules into Optical Tweezers
AU - Reuben R. W. Wang
AU - Christian H. Nunez
AU - Conner Williams
AU - Amanda Younes
AU - Li Du
AU - H. R. Sadeghpour
AU - Kang-Kuen Ni
PY - 2026
DA - 2026/09/21
PB - arXiv
DO - 10.48550/arxiv.2608.20332
UR - https://arxiv.org/abs/2608.20332
AB - We propose the high-fidelity preparation of single bosonic molecules in optical tweezers starting from small tweezer-trapped molecular ensembles. Our scheme combines a static electric field and a microwave field to generate strong, tunable, anisotropic interactions that shield the molecules against two-body collisional loss. We show that this shielding eliminates all long-range bound states, preventing three-body recombination. This elimination persists for all microwave ellipticities, including the experimentally practical limit of linear polarization. Application of an additional electric field gradient can be used to induce controlled spilling of strongly interacting molecules out of the trap until one remains. With realistic experimental parameters, we estimate that single tweezer-trapped NaCs molecules can be isolated from a pair with fidelities exceeding 99\%, and > 95% per site across an array. These results establish collisional shielding with electric fields as an effective tool for preparing highly-filled tweezer arrays of polar molecules.
ER -