Simultaneous Wavelength Translation and Amplitude Modulation of Single Photons from a Quantum Dot

TL;DR

This paper demonstrates a method to simultaneously translate the wavelength and modulate the amplitude of single photons from a quantum dot, enabling better integration of quantum systems across different spectral regimes.

Contribution

The authors experimentally achieve simultaneous wavelength translation and amplitude modulation of single photons, a novel technique for quantum photonics integration.

Findings

Successful wavelength translation from 1300 nm to 710 nm.

Amplitude modulation at 350 ps timescales achieved.

Potential for improved quantum information device integration.

Abstract

Hybrid quantum information devices that combine disparate physical systems interacting through photons offer the promise of combining low-loss telecommunications wavelength transmission with high fidelity visible wavelength storage and manipulation. The realization of such systems requires control over the waveform of single photons to achieve spectral and temporal matching. Here, we experimentally demonstrate the simultaneous wavelength translation and amplitude modulation of single photons generated by a quantum dot emitting near 1300 nm with an exponentially-decaying waveform (lifetime $\approx$1.5 ns). Quasi-phase-matched sum-frequency generation with a pulsed 1550 nm laser creates single photons at 710 nm with a controlled amplitude modulation at 350 ps timescales.