Adiabatically preparing quantum dot spin states in the Voigt geometry



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Paspalakis, Emmanuel and Economou, Sophia E. and Carreño Sánchez, Fernando (2019) Adiabatically preparing quantum dot spin states in the Voigt geometry. Journal of Applied Physics, 125 (2). ISSN 0021-8979

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We use mutually delayed and partially overlapping optical pulses, similar to those used in stimulated Raman adiabatic passage and its variations, for the coherent control of quantum dot spin states in the Voigt geometry. We consider the quantum dot system initially in an incoherent mixture of the two electron-spin states. We show that the application of regular delayed and partially overlapping pulses can lead to initialization. In addition, if initially delayed, partially overlapping, and simultaneously switched off pulses are applied, the initially incoherent mixture can be changed to a specifically designed coherent superposition state. We also find that due to the initial conditions of the studied quantum system, the proposed methods work for different pulse orderings.

Item Type:Article
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Published Online: 10 January 2019 Accepted: December 2018
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.

Uncontrolled Keywords:Coherent control; Quantum coherence; Electromagnetic pulse; Optical field; Quantum computing; Adiabatic process; Dark state; Quantum mechanical systems and processes; Quantum dots; Quantum optics
Subjects:Sciences > Physics > Electromagnetism
Sciences > Physics > Optics
Sciences > Physics > Quantum theory
ID Code:51538
Deposited On:26 Feb 2019 14:54
Last Modified:10 Jan 2020 00:01

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