辐射场与二能级原子相互作用的量子逻辑功能

The Quantum Logical Function of Interaction between Radiation Field and Two-level Atom

利用半经典理论和量子理论研究辐射场与二能级原子(量子位)的相互作用。将量子力学体系视为量子逻辑门,得到量子体系演化的幺正变换的矩阵表示,论述把量子力学体系波函数与量子逻辑门的输入输出态统一起来的方法,得出辐射场与原子相互作用能实现量子逻辑功能。结果有利于指导在实际中选取合适的遵守量子力学定律的两态系统完成量子逻辑操作。

In this paper, the interaction between radiation field and ,two-level atom are studied by semiclassical theory and quantum theory respectively. We treated quantum-mechanics system as quantum logic gate and studied matrix representation of unitary transition in the quantum logic gate. The consistence of input（ontput）states of quantum logic gates and wave-functions of quantum-mechanics systems are obtained. These will be useful for making choice of two-state systems to implement quantum logic operation.