1978 年 47 巻 12 号 p. 1112-1126
Local coherent transient phenomena associated with two-quantum (photon) coherence in a multi-level NMR system are reviewed. Stepwise excitation and detection as well as two-quantum excitation of the coherence are described. Attention has been paid on some parallels and differences between coherent phenomena in NMR and quantum optics. A brief description of the new coherent phenomena which we found is also given.