Progress on Multispecies Ion Trap Quantum Network Node*

Trapped atomic ions are one of the leading platforms for quantum computing systems and quantum networks. We plan to utilize a modular architecture consisting of three separate traps, each containing a 171Yb+ memory qubit and a 138Ba+ communication qubit. We will collect single 493 nm photons from the middle node of the network using two in-vacuo high numerical aperture (NA=0.8) aspheric lenses. These lenses replace the NA=0.6 multi-component objectives we use to collect single photons from the end node traps. We present preliminary fiber coupling results and heating rate measurements from this system. We also discuss how to generate GHZ states among the three traps using both atomic species.