Speaker
Description
Single-photon sources emitting at telecom wavelengths are a key component for applications of quantum information science. However, currently some of the best available single-photon sources are based on InAs/GaAs quantum dots, emitting at around 900nm. Nevertheless, quantum frequency conversion can be used to obtain photons at 1550nm, while maintaining high purity and photon indistinguishability.
In this project we propose on-chip frequency conversion of single-photon emission from InAs quantum dots, embedded in AlGaAs Bragg-reflection waveguides (BRWs).
Through the strong optical nonlinearity of AlGaAs and the ability to achieve exact phase-matching, BRWs provide an ideal platform for difference frequency generation and further allows the monolithic integration of quantum dots in the waveguide core and direct hosting of integrated pump lasers on the same chip.
