Abstract: Quantum computation is capable of solving several intractable problems in classical computation, such as large number factorization with utilizing the principles of quantum mechanics. The quantum system is always affected by decoherence while realizing quantum information processing and controlling, and decoherence is caused by interaction between the quantum system and the external environment. Therefore, it is of great significance to implement a high-fidelity quantum logic gate, which can suppress decoherence in quantum computation. In this paper, the requirements for realizing quantum computing for physical system was introduced, and then, based on the NV center in diamond system, several experimental works about the experimental implementation of the

Key words: quantum computation, decoherence, pulse sequences, NV center in diamond