Illustration from Scientific Research

Pseudo-spins (or qubits) can be encoded in the rotational states of ultracold polar molecules confined in optical lattices (or tweezer arrays) for applications in quantum simulation and computation. Typical rotational constants B v lead to transitions between rotational states in the microwave domain. Spin-exchange and Ising interactions between molecules may be controlled through the applied field E DC . Panel a adapted with permission from ref. 93 , under a Creative Commons licence CC BY 3.0 .

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