Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second

Observing Spin-Squeezed States under Spin-Exchange Collisions for a Second

Blog Article

Using the platform of a trapped-atom clock on a chip, we observe the time evolution of spin-squeezed hyperfine clock states in ultracold rubidium atoms on previously inaccessible time scales up to 1 s.The spin degree of freedom remains squeezed after 0.6 s, which is consistent with the limit imposed by particle loss and is compatible with bellfordtoysandhobbiers.shop typical Ramsey times in state-of-the-art microwave clocks.The results also reveal a surprising spin-exchange Armored Vehicle interaction effect that amplifies the cavity-based spin measurement via a correlation between spin and external degrees of freedom.

These results open up perspectives for squeezing-enhanced atomic clocks in a metrologically relevant regime and highlight the importance of spin interactions in real-life applications of spin squeezing.