Stark-shift based quantum dot-cavity electrometer

Alexander V. Tsukanov; Vadim G. Chekmachev

doi:10.1117/12.2267133

30 December 2016 Stark-shift based quantum dot-cavity electrometer

Alexander V. Tsukanov, Vadim G. Chekmachev

Proceedings Volume 10224, International Conference on Micro- and Nano-Electronics 2016; 102242I (2016) https://doi.org/10.1117/12.2267133
Event: The International Conference on Micro- and Nano-Electronics 2016, 2016, Zvenigorod, Russian Federation

Abstract

In this paper we propose the scheme of an optical quantum sensor of external electric field which design based on a double quantum dot (DQD) placed in a high quality optical semiconductor microcavity (MC). The characteristic DQD frequencies of the observed nontrivial single-electron dynamics are determined using spectroscopic simulation in the steady-state regime. Due to Stark shifts of excited energy levels of DQD located at the edge of microdisk the hybrid electron-photon spectrum changes depending on the strength and direction of electric field. Probe laser with tunable wavelength excites the structure in single-photon regime and photon spectrum from MC is detected. We analyze the system’s behavior with the use of a standard technique based on solving the Lindblad equation for the density matrix of an electron-phonon system with regard to the escape of photons from the cavity to the continuum and the relaxation of an excited electron with the emission of a photon or phonon. It will be shown that due to the design features, such a device has several advantages: high sensitivity, availability of different channels for excitation and measuring, the ability to accurately detect the spatial distribution of the field.

Citation Download Citation

Alexander V. Tsukanov and Vadim G. Chekmachev "Stark-shift based quantum dot-cavity electrometer", Proc. SPIE 10224, International Conference on Micro- and Nano-Electronics 2016, 102242I (30 December 2016); https://doi.org/10.1117/12.2267133

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