Coherent control of NV-centers in diamond in a quantum teaching lab
Vikas Sewani (20052306), Hyma Vallabhapurapu (20076543), Yang Yang (45629), Hannes Firgau (20076546), Chris Adambukulam (20076549), Brett Johnson (18032260), Jarryd Pla (20076552), Arne Laucht (3814540)
Abstract
The room temperature compatibility of the negatively charged nitrogen-vacancy (NV-) center in diamond makes it the ideal quantum system for a university teaching lab. Here, we describe a low-cost experimental setup for coherent control experiments on the electronic spin state of the NV- center. We implement spin-relaxation measurements, optically detected magnetic resonance, Rabi oscillations, and dynamical decoupling sequences on an ensemble of NV- centers. The relatively short times required to perform each of these experiments (<10 min) demonstrate the feasibility of the setup in a teaching lab. Learning outcomes include basic understanding of quantum spin systems, magnetic resonance, the rotating frame, Bloch spheres, and pulse sequence development.