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Measurements of spin-coherence in NV centers for diamond-based quantum sensors
preprintposted on 2023-01-12, 16:14 authored by Lucas Nunes Sales de Andrade, Charlie Oncebay Segura, Sérgio Ricardo Muniz
One of the biggest challenges to implement quantum protocols and quantum information processing (QIP) is achieving long coherence times, usually requiring systems at ultra-low temperatures. The nitrogen-vacancy (NV) center in diamond is a promising alternative to this problem. Due to its spin properties, easy manipulation, and the possibility of doing optical state initialization and readout, it quickly became one of the best solid-state spin systems for QIP at room temperature. Here, we present the characterization of the spin-coherence of an ensemble of NV centers in an engineered sample of ultrapure diamond as a testbed for quantum protocols for quantum metrology.