Fiber-coupled pillar array as a highly pure and stable single-photon source

Abstract

A highly pure and stable single-photon source is prepared that comprises a well-designed pillar array in which each pillar contains only a few InAs quantum dots. A nano-pillar in this array is in direct contact with a fiber end surface and cooled in a liquid-He bath. Auto-correlation measurement shows that this source provides an average $g^{(2)}(0)$ value of 0.0174 in the measured excitation-power range. This photon source and fiber coupling are quite rigid against external disturbances such as cooling-heating cycles and vibration, with long-term stability.

16 pages, 5 figures

References in corpus (4)

• Manipulating exciton fine-structure in quantum dots with a lateral electric field
• Magnetic-field-induced reduction of the exciton polarization splitting in InAs quantum dots
• Control of fine-structure splitting and excitonic binding energies in selected individual InAs/GaAs quantum dots
• Two-photon interference and coherent control of single InAs quantum dot emissions in an Ag-embedded structure