Self-Similar Nanocavity Design with Ultrasmall Mode Volume for Single-Photon Nonlinearities

Publication: Research - peer-reviewJournal article – Annual report year: 2017

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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.
Original languageEnglish
Article number223605
JournalPhysical Review Letters
Volume118
Issue number22
Number of pages6
ISSN0031-9007
DOIs
StatePublished - 2017
CitationsWeb of Science® Times Cited: 14
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