Qubit Zoo

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

1 min read

Demonstrates dipolar spin-exchange interactions between ultracold NaCs molecules in optical tweezers, a key step toward molecular qubits. The rotational states of polar molecules provide long-range dipole-dipole interactions (1/r³) for entangling gates without Rydberg excitation.

Key Results

  • Spin-exchange oscillations between rotational states of NaCs molecules
  • Long-range dipole-dipole interaction (1/r³, ~kHz at μm scale)
  • Optical tweezer array of individually controlled molecules
  • Potential for dense qubit arrays with always-on long-range coupling

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