Fast Electrical Control of a Quantum Dot Strongly Coupled to a Photonic-Crystal Cavity

2009/06/03 by Andrei Faraon, Arka Majumdar, Hyochul Kim +4 · 3 citations
Engineering · Physics and Astronomy · #Photonic Crystals and Applications #Photonic and Optical Devices #Semiconductor Lasers and Optical Devices #quant-ph

paper · pdf · doi:10.1103/physrevlett.104.047402

arxiv created 2009/06/03 · openalex publication_date 2010/01/27 · arxiv updated 2011/04/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The resonance frequency of an InAs quantum dot strongly coupled to a GaAs photonic-crystal cavity was electrically controlled via the quadratic quantum confined Stark effect. Stark shifts up to 0.3 meV were achieved using a lateral Schottky electrode that created a local depletion region at the location of the quantum dot. We report switching of a probe laser coherently coupled to the cavity up to speeds as high as 150 MHz, limited by the RC constant of the transmission line. The coupling strength g and the magnitude of the Stark shift with electric field were investigated while coherently probing the system.

Citations

• Coherent excitation of a strongly coupled quantum dot - cavity system
• Vacuum Rabi splitting with a single quantum dot in a photonic crystal nanocavity.

Cited by

• Nonlinear temporal dynamics of a strongly coupled quantum-dot–cavity system
• Waveguide-coupled photonic crystal cavity for quantum dot spin readout
• A quantum logic gate between a solid-state quantum bit and a photon

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