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Transient Dynamics of Atoms Inside Submicron Rectangular Waveguides

100%

Al-Awfi S.

The time evolution of the radiation pressure forces due to the action of a laser light on two-level atom moving inside a long hollow cylinder with a rectangular cross-section of sub-wavelength dimensions a × b is presented. This evolution is considered when the frequency of the light is comparable to a dipole allowed transition frequency. In this limit, the decay emission Γp is possible only via a very small number of modes. From the solutions of the Bloch equations in the dynamic regime, we find that the transient regime, applicable from the instant the laser is switched on. This is important for the gross motion, provided that the upper-state lifetime Γp^{-1} is relatively long while the steady-state regime, formally such that t ≫ Γp^{-1}, is appropriate for the evaluation of the forces and the dynamics for large Γp. Significant variations of the characteristics of the system are emphasized. These features are illustrated using typical parameters for the case of Eu^{3+} that has a particularly small Γp.

Semiconductor Cavity Quantum Electrodynamics with Single Quantum Dots

80%

Reitzenstein S., Schneider C., Münch S., Kistner C., Strauss M., Huggenberger A., Franeck P., Weinmann P., Kamp M., Höfling S., Worschech L., Forchel A.

Acta Physica Polonica A

2009

vol. 116

issue 4

445-450

This paper summarizes recent progress achieved in the field of semiconductor cavity quantum electrodynamics with single quantum dots with the focus being on micropillar cavities. Light-matter interaction both in the strong and weak coupling regime is presented. Resonance tuning of the quantum dot by temperature, electric fields and magnetic fields is demonstrated while the strong coupling regime can be reached. Additionally, deterministic device integration of single positioned quantum dots is reported by a combination of site controlled quantum dot growth via directed nucleation and subsequent device alignment to overcome the degree of randomness of the quantum dot position in so far most common quantum dot-cavity systems.

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2 Acta Physica Polonica A

1 2013

1 2009

1 Al-Awfi S.

1 Forchel A.

1 Franeck P.

1 Huggenberger A.

1 Höfling S.

1 Kamp M.

1 Kistner C.

1 Münch S.

1 Reitzenstein S.

1 Schneider C.

1 Strauss M.

1 Weinmann P.

1 Worschech L.

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Transient Dynamics of Atoms Inside Submicron Rectangular Waveguides

Semiconductor Cavity Quantum Electrodynamics with Single Quantum Dots