Effects of cavity and superradiance on the electrical transport through quantum dots

Details Effects of cavity and superradiance on the electrical transport through quantum dots Effects of cavity and superradiance on the electrical transport through quantum dots

2004-01-18

arxiv.org/abs/cond-mat/0401312v3

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

27 pages, 8 figures, to appear in "Quantum Dots: Research Developments", Nova Science Publishers (2005)

Scientific paper

A novel method is proposed to measure the Purcell effect by observing the current through a semiconductor quantum dot embedded inside a microcavity. The stationary current is shown to be altered if one varies the cavity length. For the double-dot system, the stationary current is found to show the interference feature (superradiance) as the inter-dot distance is varied. The amplitude of oscillation can be increased by incorporating the system into a microcavity. Furthermore, the current is suppressed if the dot distance is small compared to the wavelength of the emitted photon. This photon trapping phenomenon generates the entangled state and may be used to control the emission of single photons at predetermined times.

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