EQuAL Student Seminar: Lingjie (Jason) Chen

Engineering and probing dynamics of a low-dimensional spin system in diamond

Spinful defects within a diamond are a promising platform for studying
positionally disordered, many-body interacting spin systems. Confining these defects to lower dimensions has garnered increasing interest for entanglement enhanced sensing and simulation. Engineering low dimensional spin systems, i.e. hybrid spin systems of substitutional nitrogen defects (P1 centers) and nitrogen-vacancy centers (NV centers), has only been recently achieved with delta doped techniques. Here we present a technique to confine hybrid NV and P1 centers laterally within a 2D delta doped layer to generate 1D spins systems. Using NVs as a dilute probe, we verify their dimensionality with decoherence-based techniques. In addition, we measure the high temperature dynamics of positionally disordered, dipolar coupled P1 centers. Generating such low-dimensional spin systems has opened avenues for studying disordered 1D interacting spin systems at high temperatures.