 This paper examines the generation of entanglement between remote mathematical bits using a single photon protocol. It focuses on the nitrogen vacancy center platform and provides a detailed analysis of the various sources of infidelity. The authors demonstrate that imperfect optical excitation can lead to a detection on dependent entangled state fidelity and rate. This article was authored by S. L. N. Hermans, M. Pompili, L. Dos Santos Martins and others.