Super-universality of squeezing as spontaneous symmetry breaking

In quantum metrology, achieving the best possible sensitivity centers on creating—and realistically preparing—the right patterns of many-body entanglement; squeezed states are a prime example. While scalable spin squeezing are famously generated by one-axis twisting in all-to-all Ising models, recent work indicates that many systems without infinite-range interactions can also produce squeezing. This raises a natural question: what universal ingredients should a system possess to generate scalable squeezing? In this talk, I will present a unifying perspective that relates scalable squeezing to spontaneous symmetry breaking, in both finite-temperature and ground states. This connection yields a comprehensive classification of squeezed states by their sensing capabilities. More crucially, it translates directly into concrete preparation strategies: either quench dynamics or adiabatic preparation, the two protocols most widely used in experiments. The framework substantially broadens the landscape of platforms and Hamiltonians known to produce metrologically useful entanglement. I will close by highlighting the growing diversity of experimental platforms that are used to generate spin squeezing.