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Cavity-quantum electrodynamics using a single InAs quantum dot in a microdisk structure

Appl. Phys. Lett. 78, 3932 (2001); doi:10.1063/1.1379987

Issue Date: 18 June 2001

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A. Kiraz, P. Michler, C. Becher, B. Gayral, A. Imamoglu, Lidong Zhang, and E. Hu
Department of Electrical and Computer Engineering, University of California, Santa Barbara, California 93106

W. V. Schoenfeld and P. M. Petroff
Materials Department, University of California, Santa Barbara, California 93106
We investigate cavity-quantum electrodynamics (QED) effects in an all-semiconductor nanostructure by tuning a single self-assembled InAs quantum dot (QD) into resonance with a high quality factor microdisk whispering gallery mode (WGM). The stronger temperature dependence of the QD single-exciton (1X) resonance allows us to change the relative energy of the WGM and the 1X transitions by varying the sample temperature. The two coupled resonances exhibit crossing behavior due to the weak coupling cavity-QED regime. We demonstrate exciton lifetime reduction by 6 due to the Purcell effect by tuning the QD into resonance with the WGM. Our experiments also show that single-exciton lifetime is independent of temperature up to 50 K. ©2001 American Institute of Physics.
History: Received 6 November 2000; accepted 26 April 2001
Permalink: http://link.aip.org/link/?APPLAB/78/3932/1
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KEYWORDS and PACS

Keywords
PACS
  • 78.67.Hc
    Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter Optical properties of nanoscale materials and structures Quantum dots
  • 78.66.Fd
    Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter Optical properties of specific thin films III–V semiconductors
  • 71.35.Cc
    Electronic structure of bulk materials Excitons and related phenomena Intrinsic properties of excitons; optical absorption spectra
  • 73.21.La
    Electronic structure and electrical properties of surfaces, interfaces, thin films, and low-dimensional structures Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems (for electron states in nanoscale materials, see 73.22.-f) Quantum dots
  • YEAR: 2001

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (18)
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