标题： 条件实现的非对称通用量子克隆机 显示英文标题

标题： Conditional implementation of asymmetrical universal quantum cloning machine

摘要： 我们提出两种可行的实验实现方法，用于最优非对称的1->2光子偏振态量子克隆。 这两种实现方法均基于最近条件对称量子克隆实验的部分和最优逆过程。 逆过程仅通过一个克隆和辅助态的局部测量，然后对另一个克隆进行局部操作来完成。 局部测量仅包括一个不平衡的分束器，其中一个输出后跟随一个单光子探测器，克隆中的保真度不对称性由分束器的反射率控制。 显示英文摘要

摘要： We propose two feasible experimental implementations of an optimal asymmetric 1->2 quantum cloning of a polarization state of photon. Both implementations are based on a partial and optimal reverse of recent conditional symmetrical quantum cloning experiments. The reversion procedure is performed only by a local measurement of one from the clones and ancilla followed by a local operation on the other clone. The local measurement consists only of a single unbalanced beam splitter followed in one output by a single photon detector and the asymmetry of fidelities in the cloning is controlled by a reflectivity of the beam splitter.