Dipolar spin-exchange and entanglement between molecules in an optical tweezer array (in EN)
Ultracold polar molecules are promising candidate qubits for quantum computing and quantum simulations. Their long-lived molecular rotational states form robust qubits, and the long-range dipolar interaction between molecules provides quantum entanglement. In this work, we demonstrate dipolar spin-exchange interactions between single calcium monofluoride (CaF) molecules trapped in an optical tweezer array. We realized the spin- quantum XY model by encoding an effective spin- system into the rotational states of the molecules and used it to generate a Bell state through an iSWAP operation. Conditioned on the verified existence of molecules in both tweezers at the end of the measurement, we obtained a Bell state fidelity of 0.89(6). Using interleaved tweezer arrays, we demonstrate single-site molecular addressability.
- Research Organization:
- National Quantum Information Science (QIS) Research Centers (United States). Quantum Systems Accelerator (QSA)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2582758
- Journal Information:
- Science, Journal Name: Science Journal Issue: 6675 Vol. 382; ISSN 0036-8075
- Publisher:
- AAAS
- Country of Publication:
- United States
- Language:
- EN
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