基于绝热量子演化的量子状态转换方法

量子算法成功的标志体现为实现了正确的量子状态转换,这一过程主要通过适当的量子算符来实现。然而,事实证明寻找合适的量子算符是非常困难的。之前大多数研究主要采用机器学习的方法解决这一问题,这些算法与以酉量子操作为特征的量子电路模型有较大差距,也难以分析其在量子计算机上的实现。提出利用绝热量子演化实现量子状态的转换,与标准量子计算模型相比,量子状态的转换更加直接,也不用考虑算符的酉性,因此是在量子计算及量子通信中值得借鉴的量子状态转化方法。

Transform of Quantum States Via Adiabatic Quantum Evolution

The success of quantum algorithms is to implement correctly quantum states transform,which is mainly achieved by suitable quantum operators.It is shown that the finding of a suitable quantum operator is a great challenge.Most of previous studies solve this problem by machine learning methods.However,these algorithms are different from the standard circuit model of quantum computation which characterizes as unitary quantum operations,thus they are difficult to be realized on quantum computers.It is shown that the transform of quantum states can be implemented by adiabatic quantum evolution,which is a kind of pure quantum effect and suitable well for physical implementation.The adiabatic theorem guarantees that the final state of the system would be the desired output.It is therefore a remarkable approach for quantum states transform in quantum computation and quantum communication.