Quantum teleportation is a useful quantum information technology to transmit quantum states between different degrees of freedom. Here we report a quantum state transfer experiment in the linear optical system, transferring a single-photon state in the polarization degree of freedom (DoF) to another photon in the orbital angular momentum (OAM) quantum state via a biphoton OAM entangled channel. Our experimental method is based on quantum teleportation technology. The differences between ours and the original teleportation scheme is that the transfer state is known in ours, and our method is for different particles with different DoFs, while the original one is for different particles with the same DoF. In addition, our present experiment is implemented with a high Bell efficiency since each of the four hybrid-entangled Bell states can be discriminated. We use six states of poles of the Bloch sphere to test our experiment, and the fidelity of the quantum state transfer is $91.8\pm 1.3\%$.

中文翻译：

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通过量子隐形传态技术在两个具有极化和轨道角动量的光子之间进行量子态转移

量子隐形传态是一种有用的量子信息技术，可在不同自由度之间传输量子态。在这里，我们报告了在线性光学系统中进行的量子态转移实验，通过双光子OAM纠缠通道将偏振自由度（DoF）中的单光子状态转移到轨道角动量（OAM）量子态中的另一个光子。我们的实验方法基于量子隐形传态技术。我们的方法与原始的隐形传态方案之间的区别在于，我们知道传输状态，并且我们的方法适用于具有不同DoF的不同粒子，而原始方法则适用于具有相同DoF的不同粒子。此外，由于可以区分四个混合纠缠的贝尔状态，因此本实验以较高的贝尔效率实施。我们使用Bloch球极的六个状态来测试我们的实验，并且量子态转移的保真度是$91.8\pm 1.3％$。