Contactless nonlinear optics mediated by long-range Rydberg interactions
Contactless nonlinear optics mediated by long-range Rydberg interactions
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DOI：
10.1038/nphys4058
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发表时间：
2017-07-01
期刊：
影响因子：
19.6
通讯作者：
Adams, Charles S.
中科院分区：
文献类型：
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作者：
Busche, Hannes;Huillery, Paul;Adams, Charles S.
在传统的非线性光学、线性量子光学（1，2）和腔量子电动力学（3，4）中，为了产生有效的光子-光子相互作用，光子必须同时与共同介质中的物质相互作用。相反，在里德伯量子光学中（5-10），可见光子相干且可逆地映射到集体原子里德伯激发上（11），从而产生偶极介导的长距离有效光子-光子相互作用（12，13）。因此，不再需要光照模式之间的空间重叠。我们证明了这样的非接触耦合存储在空间分离的光学介质中的集体里德伯激发的光子之间。由每个光子引起的势修改其相邻光子的恢复模式（7，9，14，15），导致它们之间的相关性。我们测量这些相关性作为相互作用强度，距离和存储时间的函数，证明了由15倍波长分离的光子之间的有效相互作用。非接触式有效光子-光子相互作用（16）与可扩展的多通道光子器件（15，17）和使用光的强相关多体动力学的研究（18）相关。
In conventional nonlinear optics, linear quantum optics(1,2), and cavity quantum electrodynamics(3,4) to create effective photon-photon interactions photons must have, at one time, interacted with matter inside a common medium. In contrast, in Rydberg quantum optics(5-10), optical photons are coherently and reversibly mapped onto collective atomic Rydberg excitations(11), giving rise to dipole-mediated effective photon-photon interactions that are long range(12,13). Consequently, a spatial overlap between the lightmodesis no longer required. We demonstrate such a contactless coupling between photons stored as collective Rydberg excitations in spatially separate optical media. The potential induced by each photon modifies the retrieval mode of its neighbour(7,9,14,15), leading to correlations between them. We measure these correlations as a function of interaction strength, distance and storage time, demonstrating an effective interaction between photons separated by 15 times their wavelength. Contactless effective photon-photon interactions(16) are relevant for scalable multichannel photonic devices(15,17) and the study of strongly correlated many-body dynamics using light(18).