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

Andrei Faraon, Arka Majumdar, Hyochul Kim, Pierre Petroff, and Jelena Vučković
Phys. Rev. Lett. 104, 047402 – Published 27 January 2010

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.

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  • Received 4 June 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.047402

©2010 American Physical Society

Authors & Affiliations

Andrei Faraon1,2,*, Arka Majumdar1, Hyochul Kim3, Pierre Petroff3, and Jelena Vučković1

  • 1E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
  • 2Hewlett-Packard Laboratories, 1501 Page Mill Road, Palo Alto, California 94304, USA
  • 3Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106, USA

  • *andrei.faraon@hp.com

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Vol. 104, Iss. 4 — 29 January 2010

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