### Abstract

We study the angular correlation of single photons emitted from excited semiconductor quantum wells. The considered physical system is described in terms of two subsystems, the electronic part constituting the bath and the photonic part constituting the bathed subsystem, both being coupled by the light-matter interaction. From the master equations describing the coarse-grained Markovian evolution of the photonic subsystem, we derive the corresponding equations of motion for the photonic angular correlation functions. These equations are solved in the stationary, low-density limit. Experimentally, the angular correlations can be assessed by studying the interference of light emitted in different directions. In agreement with recent experimental results, we find that for ordered quantum wells angular correlations exist only in emission directions for which the projections of the photon momenta onto the plane of the quantum well are equal. This feature is a direct consequence of the Bloch character of the electronic states in an ordered quantum well. Thus the experimental study of the angular correlations of emitted photons may provide an interesting diagnostic tool to reveal the presence of disorder in semiconductor heterostructures and to characterize its influence on the electronic states near the band edges.

Original language | English (US) |
---|---|

Pages (from-to) | 21-31 |

Number of pages | 11 |

Journal | Journal of Luminescence |

Volume | 121 |

Issue number | 1 |

DOIs | |

State | Published - Nov 2006 |

Externally published | Yes |

### Fingerprint

### Keywords

- Angular correlated photons
- Photoluminescence
- Quantum statistics
- Quantum wells

### ASJC Scopus subject areas

- Physical and Theoretical Chemistry
- Atomic and Molecular Physics, and Optics

### Cite this

*Journal of Luminescence*,

*121*(1), 21-31. https://doi.org/10.1016/j.jlumin.2005.09.014

**Angular correlation of photons emitted from an excited quantum well.** / Maschke, K.; Thomas, P.; Reuse, F. A.; de Coulon, V.; Hoyer, W.; Kira, M.; Koch, Stephan W.

Research output: Contribution to journal › Article

*Journal of Luminescence*, vol. 121, no. 1, pp. 21-31. https://doi.org/10.1016/j.jlumin.2005.09.014

}

TY - JOUR

T1 - Angular correlation of photons emitted from an excited quantum well

AU - Maschke, K.

AU - Thomas, P.

AU - Reuse, F. A.

AU - de Coulon, V.

AU - Hoyer, W.

AU - Kira, M.

AU - Koch, Stephan W

PY - 2006/11

Y1 - 2006/11

N2 - We study the angular correlation of single photons emitted from excited semiconductor quantum wells. The considered physical system is described in terms of two subsystems, the electronic part constituting the bath and the photonic part constituting the bathed subsystem, both being coupled by the light-matter interaction. From the master equations describing the coarse-grained Markovian evolution of the photonic subsystem, we derive the corresponding equations of motion for the photonic angular correlation functions. These equations are solved in the stationary, low-density limit. Experimentally, the angular correlations can be assessed by studying the interference of light emitted in different directions. In agreement with recent experimental results, we find that for ordered quantum wells angular correlations exist only in emission directions for which the projections of the photon momenta onto the plane of the quantum well are equal. This feature is a direct consequence of the Bloch character of the electronic states in an ordered quantum well. Thus the experimental study of the angular correlations of emitted photons may provide an interesting diagnostic tool to reveal the presence of disorder in semiconductor heterostructures and to characterize its influence on the electronic states near the band edges.

AB - We study the angular correlation of single photons emitted from excited semiconductor quantum wells. The considered physical system is described in terms of two subsystems, the electronic part constituting the bath and the photonic part constituting the bathed subsystem, both being coupled by the light-matter interaction. From the master equations describing the coarse-grained Markovian evolution of the photonic subsystem, we derive the corresponding equations of motion for the photonic angular correlation functions. These equations are solved in the stationary, low-density limit. Experimentally, the angular correlations can be assessed by studying the interference of light emitted in different directions. In agreement with recent experimental results, we find that for ordered quantum wells angular correlations exist only in emission directions for which the projections of the photon momenta onto the plane of the quantum well are equal. This feature is a direct consequence of the Bloch character of the electronic states in an ordered quantum well. Thus the experimental study of the angular correlations of emitted photons may provide an interesting diagnostic tool to reveal the presence of disorder in semiconductor heterostructures and to characterize its influence on the electronic states near the band edges.

KW - Angular correlated photons

KW - Photoluminescence

KW - Quantum statistics

KW - Quantum wells

UR - http://www.scopus.com/inward/record.url?scp=33646849447&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33646849447&partnerID=8YFLogxK

U2 - 10.1016/j.jlumin.2005.09.014

DO - 10.1016/j.jlumin.2005.09.014

M3 - Article

AN - SCOPUS:33646849447

VL - 121

SP - 21

EP - 31

JO - Journal of Luminescence

JF - Journal of Luminescence

SN - 0022-2313

IS - 1

ER -