摘要
Quantum information science involves the study of information pro-cessing tasks that can be accomplished using quantum mechanical sys-tems.The basic unit of quantum information is a quantum bit(qubit),which exists in a two-dimensional space spanned for example by the or-thogonal polarization states of a photon.In this case,each photon carries only one qubit.However,if the photon is encoded in a high-dimensional space.
基金
This work is supported by National Natural Science Foundation of China(NSFC)(61435011,61525504,11934013)
Anhui Initiative in Quantum Information Technologies(AHY020200)。
