Anomalous in-plane magneto-optical anisotropy of self-assembled quantum dots

Abstract

We report on a complex nontrivial behavior of the optical anisotropy of quantum dots that is induced by a magnetic field in the plane of the sample. We find that the optical axis either rotates in the opposite direction to that of the magnetic field or remains fixed to a given crystalline direction. A theoretical analysis based on the exciton pseudospin Hamiltonian unambiguously demonstrates that these effects are induced by isotropic and anisotropic contributions to the heavy-hole Zeeman term, respectively. The latter is shown to be compensated by a built-in uniaxial anisotropy in a magnetic field B_c = 0.4 T, resulting in an optical response typical for symmetric quantum dots.

arXiv comment5 pages, 3 figures

References in corpus (3)

• Quantum Computation with Quantum Dots
• Optical Read-Out and Initialization of an Electron Spin in a Single Quantum Dot
• Quantum-dot-based optical polarization conversion

Cited by in corpus (6)

• Optical activity of quantum wells
• Material models of dark energy
• Strong enhancement of heavy-hole Landé factor $q$ in InGaAs symmetric quantum dots revealed by coherent optical spectroscopy
• The in-plane anisotropy of the hole $g$ factor in CdTe/(Cd,Mg)Te quantum wells studied by spin-dependent photon echoes
• Hidden anisotropy controls spin-photon entanglement in a charged quantum dot
• Anisotropy of in-plane hole g-factor in CdTe/ZnTe quantum dots