Cavity QED Enhanced Tweezers-Array of Strontium

As a wind vane detects the presence and direction of wind, so too can atoms act as sensors for phenomena invisible to the human eye. Systems of atoms can be tailored for various applications; sensors are not one-size-fits-all. Quantum sensors operating in the optical regime provide rich opportunities for exploration. Our goal is to push sensing capacities beyond the standard quantum limit and toward the Heisenberg limit. To this end, we use single-atom control and all-to-all entanglement among the atoms. Our novel system combines the advantages of optical tweezers with a custom cavity design to create a cavity-QED enhanced tweezers-array of strontium atoms. We aim for a finesse of ~150,000 with a single atom cooperativity of ~100 over a range of 200 micron. We present results from testing the cavity design and explore experiments dependent upon the degree of light-atom coupling achieved such as methods of generating GHZ states for metrological research benefit.