Realization of high-Q/V bichromatic photonic crystal cavities defined by an effective Aubry-André-Harper potential

Abstract

We report on the design, fabrication and optical characterization of bichromatic photonic crystal cavities in thin silicon membranes, with resonances around 1550 nm wavelength. The cavity designs are based on a recently proposed photonic crystal implementation of the Aubry-André-Harper bichromatic potential, which relies on the superposition of two one-dimensional lattices with non-integer ratio between the periodicity constants. In photonic crystal nanocavities, this confinement mechanism is such that optimized figures of merit can be straightforwardly achieved, in particular an ultra-high-Q factor and diffraction-limited mode volume. Several silicon membrane photonic crystal nanocavities with Q-factors in the 1 million range have been realized, as evidenced by resonant scattering. The generality of these designs and their easy implementation and scalability make these results particularly interesting for realizing highly performing photonic nanocavities on different materials platforms and operational wavelengths.

arXiv commentsubmitted

References in corpus (16)

• Photonic quantum technologies
• Quantum nature of a strongly-coupled single quantum dot-cavity system
• Anderson localization of a non-interacting Bose-Einstein condensate
• Coherent generation of nonclassical light on a chip via photon-induced tunneling and blockade
• Self-tuned quantum dot gain in photonic crystal lasers
• Direct observation of a localization transition in quasi-periodic photonic lattices
• Ultra-low threshold, electrically pumped quantum dot photonic crystal nanocavity laser
• Strongly correlated photons on a chip
• Laser oscillation in a strongly coupled single quantum dot-nanocavity system
• General Recipe for Designing Photonic Crystal Cavities
• Exponential localization in one-dimensional quasiperiodic optical lattices
• The quantum optical Josephson interferometer
• Single-photon blockade in doubly resonant nanocavities with second-order nonlinearity
• Single-photon nonlinear optics with Kerr-type nanostructured materials
• GaAs photonic crystal cavity with ultra-high Q: microwatt nonlinearity at 1.55 $\mu$m
• Room temperature all-silicon photonic crystal nanocavity light emitting diode at sub-bandgap wavelengths

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• Single SiGe Quantum Dot Emission Deterministically Enhanced in a High-Q Photonic Crystal Resonator
• Improved design and experimental demonstration of ultrahigh-Q C${}_{\text{6}}$-symmetric H1 hexapole photonic crystal nanocavities
• Trimming and ultra-wide bandwidth expansion of silicon frequency comb spectra with self-adaptive boundary waveguides