摘要
We present a scheme for probabilistic transformation of special quantum states assisted by auxiliary qubits.In our scheme,if quantum states can be rewritten in a particular form,it is possible to transform such states into other states using lowerdimensional unitary operations that can be more easily realized in physical experiments.Furthermore,as an important application,we propose a generalized scheme that helps construct faithful quantum channels via various probabilistic channels when considering the existence of nonmaximally-entangled states.
We present a scheme for probabilistic transformation of special quantum states assisted by auxiliary qubits. In our scheme, if quantum states can be rewritten in a particular form, it is possible to transform such states into other states using lower- dimensional unitary operations that can be more easily realized in physical experiments. Furthermore, as an important application, we propose a generalized scheme that helps construct faithful quantum channels via various probabilistic channels when consid- ering the existence of nonmaximally-entangled states.
基金
supported by the National Natural Science Foundation of China(61104002,60904034and61071214)
the Natural Science Foundation of Jiangsu Province(BK2011283and BK2011377)
the Natural Science Foundation of the Jiangsu Higher Education Institutions of China(10KJB510024)
