Set up and adjust the instrument, get familiar with the principle of optically detected magnetic resonance, NV center, microwave generation and pulse control.
Understand NV center qubit by measuring the optically detected magnetic resonance spectrum and get the resonance frequency for spin control.
The Rabi oscillation of NV center is measured, and get the microwave pulse length corresponding to the quantum logic gate.
Spin echo is an effective technique used to suppress the coupling between the qubit and the environment, so as to prolong the coherence time.
T2 experiment shows the evolution of quantum superposition state and measures the decoherence time of NV center spin.
The decoherence time is extended by designing the dynamical decoupling sequence to average out the coupling between the qubit and the environment.
A two-qubit Deutsch-Jozsa quantum algorithm is realized on the NV center quantum processor.