This article is cited in 6 papers

Quantum computations

Effect of optical phonons on the charge qubit dynamics in a semiconductor microcavity

A. V. Tsukanov, I. Yu. Kateev

Insitute of Physics and Technology, Institution of Russian Academy of Sciences, Moscow

Abstract: We consider the possibility of using optical vibrational degrees of freedom as an additional resource for controlling the evolution of a charge qubit based on a semiconductor single-electron double quantum dot. The effect of electron – photon – phonon processes on the accuracy of single-qubit operations is investigated. It is shown that, depending on the phonon decay rate and detuning of the electronic transition frequency from the optical phonon frequency, these processes can both facilitate and prevent coherent electron transfer between quantum dots.

Keywords: quantum computer, qubit, quantum dot, microcavity, optical phonons.

Received: 16.03.2018
Revised: 03.05.2018

 English version: Quantum Electronics, 2018, 48:7, 641–647

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