热腔条件下实现Deutsch-Jozsa算法的简单方案

A Simple Scheme of Realization of Deutsch-Jozsa Algorithm under Thermal Cavity Condition

基于热腔场与双原子相互作用系统,提出一种简单的Deutsch-Jozsa算法的实现方案.通过外加经典场可以消除腔场光子数的依赖,整个过程不需要在真空状态中保留热腔.此外,该方案中也不需要原子和腔场的大失谐,可以大大缩减操作时间.通过精确的数值计算,证明方案具有较高的保真度.

A simple scheme is proposed to implement the Deutsch-Jozsa algorithm based on two-atom interaction in a thermal cavity.The photon-number-dependent parts in the evolution operator are cancelled with the strong resonant classical field added.It does not need to remain the cavity in the vacuum state throughout the procedure.Besides,large detuning between the atoms and the cavity is not necessary either,leading to speed up of quantum operation.Finally,proved by numerical simulation that the proposed scheme has high fidelity.