Hannover 2016 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 57: Quantum Effects: QED II

Q 57.2: Talk

Thursday, March 3, 2016, 15:00–15:15, f442

Nonclassical light from an incoherently pumped quantum dot in a microcavity — •Lucas Teuber, Peter Grünwald, and Werner Vogel — Institut für Physik, Universität Rostock, D-18055 Rostock, Germany

Quantum dots in semiconductor microcavities have become one of the backbones of semiconductor quantum optics. However, technical and physical issues often limit the study of optical fields to incoherently excited systems. For incoherently driven two-level systems, we derive steady-state solutions for the correlation of intracavity field and the quantum dot by means of recurrence relations [1]. With these correlations, different nonclassicality criteria based on moments [2] are analyzed. Realistic cavity systems from previous experiments [3] show nonclassicality in terms of lower-order moments for moderate quantum-dot–cavity coupling. Our method also allows to compute the characteristic function [4] in order to prove that the intracavity field is always nonclassical.

[1] L. Teuber, P. Grünwald, and W. Vogel, Phys. Rev. A 92, 053857 (2015).

[2] E. Shchukin, Th. Richter, and W. Vogel, Phys. Rev. A 71, 011802(R) (2005).

[3] G. Khitrova, H. M. Gibbs, M. Kira, S. W. Koch, and A. Scherrer, Nature Phys. 2, 81 (2006).

[4] W. Vogel, Phys. Rev. Lett. 84, 1849 (2000).