Dipolar spin-exchange and entanglement between molecules in an optical tweezer array

Bao et al. demonstrated dipolar spin exchange and entanglement between individually trapped CaF molecules. This belongs to the ultracold polar-molecule branch rather than the chemically synthesized molecular-spin branch.

Key Results

• Realized an effective spin-$1/2$ XY interaction in rotational states of tweezer-trapped CaF molecules.
• Generated a Bell state through an iSWAP-family operation with conditional fidelity $0.89(6)$.
• Demonstrated single-site molecular addressability with interleaved tweezer arrays.

Links

• Journal: Science
• arXiv: 2211.09780

Zoo Links

• polar-molecule-qubit