Time-bin encoded atom-photon entanglement in a ¹⁷¹Yb atom array.

Recent developments in neutral atom arrays have demonstrated promising prospects in advancing quantum information science. In particular, arrays of 171Yb atoms with nuclear spin I = 1/2 have enabled exciting progress toward quantum computation, metrology, and networking. With an array of 171Yb atoms trapped in tweezers at the magic wavelength for the optical clock transition, we exploit the "omg" level structure to demonstrate manipulation of the metastable nuclear spin qubits with high-fidelity qubit gates and nondestructive readout. We utilize our ability to perform repeated resets of the metastable qubit combined with fast, high-fidelity pulses on the 3P0 – 3D1 transition to present time-bin encoded entanglement between the metastable nuclear spin qubit and telecom-band photons. Lastly, we outline our efforts toward extending atom-photon entanglement to the generation of atom-atom remote entanglement. This constitutes an important step towards atom-array-based telecom-band quantum networking.