Adiabatically preparing quantum dot spin states in the Voigt geometry
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 tw...
| Autores: | , , |
|---|---|
| Formato: | artículo |
| Fecha de publicación: | 2019 |
| País: | España |
| Recursos: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Idioma: | inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/13113 |
| Acesso em linha: | https://hdl.handle.net/20.500.14352/13113 |
| Access Level: | acceso abierto |
| Palavra-chave: | 537.531 530.145 535 Coherent control Quantum coherence Electromagnetic pulse Optical field Quantum computing Adiabatic process Dark state Quantum mechanical systems and processes Quantum dots Quantum optics Electromagnetismo Óptica (Física) Teoría de los quanta 2202 Electromagnetismo 2209.19 Óptica Física 2210.23 Teoría Cuántica |
| Resumo: | 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. |
|---|