Rydberg-Dressed Ising Interactions for Floquet-Enhanced Spin Squeezing

Rydberg dressing provides a versatile way to create strong coherent interactions between ground-state neutral atoms. These local, optically controlled interactions can theoretically be used to create metrologically useful entanglement, such as spin squeezing in an atomic ensemble. We present progress on spin squeezing in a cesium atomic clock with Ising interactions produced by single-photon coupling to nP states. The resulting finite-range interactions generate an analog of one-axis twisting, which is well-established for squeezing in all-to-all-coupled systems. We implement optimized pulse sequences incorporating Rydberg dressing and an effective transverse field to generate strong twisting dynamics with limited decoherence. The inclusion of the transverse field additionally opens prospects for Floquet engineering to realize a modified two-axis countertwisting Hamiltonian for optimized squeezing.