Work

Waveguide-coupled photonic crystal cavity for quantum dot spin readout

Year: 2014

Type: article

Abstract: We present a waveguide-coupled photonic crystal H1 cavity structure in which the orthogonal dipole modes couple to spatially separated photonic crystal waveguides. Coupling of each cavity mode to its respective waveguide with equal efficiency is achieved by adjusting the position and orientation of the waveguides. The behavior of the optimized device is experimentally verified for where the cavity mode splitting is larger and smaller than the cavity mode linewidth. In both cases, coupled Q-factors up to 1600 and contrast ratios up to 10 are achieved. This design may allow for spin state readout of a self-assembled quantum dot positioned at the cavity center or function as an ultra-fast optical switch operating at the single photon level.

Source: Optics Express

DOI: 10.1364/oe.22.002376

Authors: R. J. Coles, N. Prtljaga, B. Royall, I. J. Luxmoore, A. M. Fox, M. S. Skolnick

Language: English

Topic: Photonic Crystals and Applications

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: Engineering and Physical Sciences Research Council

Awards: G2959391285, Semiconductor Integrated Quantum Optical Circuits, G8030090792