This study reports the first realization of alkaline-earth atoms in high-n circular Rydberg states trapped in optical tweezers. The research focuses on the creation and control of circular Rydberg states of $ {}^{88}Sr $ atoms, which are highly promising for quantum simulations due to their long coherence times and protection from decay. The team demonstrated the creation of very high-n (n = 79) circular states and measured lifetimes of up to 2.55 ms at room temperature, achieved through cavity-assisted suppression of black-body radiation. They also showed coherent control of a microwave qubit encoded in circular states of nearby manifolds and characterized the qubit coherence time via Ramsey and spin-echo spectroscopy. The work highlights the potential of circular Rydberg states for quantum simulations with divalent atoms, leveraging the optically active core ion. The study also quantifies the trapping-induced light shift on the qubit and demonstrates the trapping of circular Rydberg atoms using the $ Sr^{+} $ core polarizability. The results show that the long-lived circular Rydberg states can be controlled and manipulated with high fidelity, opening new avenues for quantum simulations and quantum computing. The research provides a foundation for future work on quantum simulations with circular Rydberg states and offers insights into the potential of alkaline-earth atoms in quantum technologies.This study reports the first realization of alkaline-earth atoms in high-n circular Rydberg states trapped in optical tweezers. The research focuses on the creation and control of circular Rydberg states of $ {}^{88}Sr $ atoms, which are highly promising for quantum simulations due to their long coherence times and protection from decay. The team demonstrated the creation of very high-n (n = 79) circular states and measured lifetimes of up to 2.55 ms at room temperature, achieved through cavity-assisted suppression of black-body radiation. They also showed coherent control of a microwave qubit encoded in circular states of nearby manifolds and characterized the qubit coherence time via Ramsey and spin-echo spectroscopy. The work highlights the potential of circular Rydberg states for quantum simulations with divalent atoms, leveraging the optically active core ion. The study also quantifies the trapping-induced light shift on the qubit and demonstrates the trapping of circular Rydberg atoms using the $ Sr^{+} $ core polarizability. The results show that the long-lived circular Rydberg states can be controlled and manipulated with high fidelity, opening new avenues for quantum simulations and quantum computing. The research provides a foundation for future work on quantum simulations with circular Rydberg states and offers insights into the potential of alkaline-earth atoms in quantum technologies.