期刊
PHYSICAL REVIEW LETTERS
卷 118, 期 22, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.223605
关键词
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资金
- Samsung Scholarship
- Air Force Office of Scientific Research (AFOSR) MURI
- Air Force Research Laboratory RITA program [FA8750-13-2-0120]
- AFOSR PECASE
- Danish Council for Independent Research [DFF: 1325-00144]
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.
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