光子学
角动量
物理
光子
量子信息
量子
量子网络
量子信道
量子态
量子信息科学
酉变换
计算机科学
量子力学
拓扑(电路)
量子纠缠
数学
组合数学
作者
Lu‐Ting Chou,Hao‐Hsuan Hung,Ai‐Yin Liu,Shao‐Hsuan Wu,Je‐Chi Jang,Dong‐Lin Zhong,Hsien Sheng Hsiao,Shih‐Hsuan Chia
标识
DOI:10.1002/lpor.202200297
摘要
High-dimensional quantum systems offer many advantages over low-dimensional quantum systems. Meanwhile, unitary transformations on quantum states are important parts in various quantum information tasks, whereas they become technically infeasible as the dimensionality increases. The photonic orbital angular momentum (OAM), which is inherit in the transverse spatial mode of photons, offers a natural carrier to encode information in high-dimensional spaces. However, it's even more challenging to realize arbitrary unitary transformations on the photonic OAM states. Here, by combining the path and OAM degrees of freedom of a single photon, an efficient scheme to realize arbitrary unitary transformations on the path-OAM coupled quantum states is proposed. The proposal reduces the number of required interferometers by approximately one quarter compared with previous works, while maintaining the symmetric structure. It is shown that by using OAM-to-path interfaces, this scheme can be utilized to realize arbitrary unitary transformations on the OAM states of photons. This work facilitates the development of high-dimension quantum state transformations, and opens a new door to the manipulation of the photonic OAM states.
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