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arXiv 0810.2417quant-ph
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光子从自旋到轨道angular momentum的量子信息传递

Quantum information transfer from spin to orbital angular momentum of photons

Eleonora Nagali, Fabio Sciarrino, Francesco De Martini, Lorenzo Marrucci, Bruno Piccirillo, Ebrahim Karimi, Enrico Santamato

摘要:

光学“自旋-轨道”耦合发生在被称为“q板”的适当图案化的非均匀双折射板中,允许单个光子的偏振与其轨道角动量(OAM)纠缠。这个过程,反过来,可以用来建立一个双向的“自旋-OAM接口”,能够将量子信息从自旋转置到光子和\textit{vice versa}的OAM自由度。在这里,我们通过单光子量子断层分析实验证明了这一过程。此外,我们表明,双光子量子关联,如合并干涉所产生的,可以成功地转移到OAM自由度。

英文摘要:

The optical "spin-orbit" coupling occurring in a suitably patterned nonuniform birefringent plate known as `q-plate' allows entangling the polarization of a single photon with its orbital angular momentum (OAM). This process, in turn, can be exploited for building a bidirectional "spin-OAM interface", capable of transposing the quantum information from the spin to the OAM degree of freedom of photons and \textit{vice versa}. Here, we experimentally demonstrate this process by single-photon quantum tomographic analysis. Moreover, we show that two-photon quantum correlations such as those resulting from coalescence interference can be successfully transferred into the OAM degree of freedom.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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