Optically Detected Microwave Resonance at 95 GHz of Exciton States in InAs/GaAs Quantum Dots

This is the authors' abstract. We don't add key points for this paper.

We report about the first observation of optically detected microwave resonance spectra of MBE-grown InAs/GaAs quantum dots (QD). The signal is detected via modulation of the total intensity of the QD emission induced by W-band (95 GHz) microwave excitation. Optically detected magnetic resonance (ODMR) lines are observed at higher fields when the static field is either parallel or perpendicular to the growth direction, with hole g-values |gh,∥| = 3.9 and |gh,⟂| = 3.0, respectively. These broad ODMR lines are tentatively attributed to hole spin transitions. A strongly anisotropic low-field transition is ascribed to cyclotron resonance (CR), corresponding to an effective mass of 0.059 m0.