Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities
Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities
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DOI：
10.1103/physrevlett.118.223605
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发表时间：
2017-05-30
影响因子：
8.6
通讯作者：
Englund, Dirk
中科院分区：
文献类型：
--
作者：
Choi, Hyeongrak;Heuck, Mikkel;Englund, Dirk
我们提出了一种光子晶体纳米腔的设计与自相似的电磁边界条件，实现超小模式体积（V-eff）。腔模的电能密度可以在空气或电介质区域中最大化，这取决于边界条件的选择。我们用硅-空气一维光子晶体腔来说明设计概念，该腔在λ类似于1550 nm处达到V-eff类似于7.01 × 10（-5）λ（3）的超小模体积。我们表明，在我们的设计中，极端的光集中可以实现超强的克尔非线性，即使在单光子水平。这些特性为腔量子电动力学、光谱学和量子非线性光学开辟了新的方向。
We propose a photonic crystal nanocavity design with self-similar electromagnetic boundary conditions, achieving ultrasmall mode volume (V-eff). The electric energy density of a cavity mode can be maximized in the air or dielectric region, depending on the choice of boundary conditions. We illustrate the design concept with a silicon-air one-dimensional photon crystal cavity that reaches an ultrasmall mode volume of V-eff similar to 7.01 x 10(-5)lambda(3) at lambda similar to 1550 nm. We show that the extreme light concentration in our design can enable ultrastrong Kerr nonlinearities, even at the single-photon level. These features open new directions in cavity quantum electrodynamics, spectroscopy, and quantum nonlinear optics.