Robust Parallel Laser Driving of Quantum Dots for Multiplexing of Quantum Light Sources
Abstract
Deterministic sources of quantum light (i.e. single photons or pairs of entangled photons) are required for a whole host of applications in quantum technology, including quantum imaging, quantum cryptography and the long-distance transfer of quantum information in future quantum networks. Semiconductor quantum dots are ideal candidates for solid-state quantum emitters as these artificial atoms have large dipole moments and a quantum confined energy level structure, enabling the realization of single photon sources with high repetition rates and high single photon purity. Quantum dots may also be triggered using a laser pulse for on-demand operation. The naturally-occurring size variations in ensembles of quantum dots offers the potential to increase the bandwidth of quantum communication systems through wavelength-division multiplexing, but conventional laser triggering schemes based on Rabi rotations are ineffective when applied to inequivalent emitters. Here we report the demonstration of the simultaneous triggering of >10 quantum dots using adiabatic rapid passage. We show that high-fidelity quantum state inversion is possible in a system of quantum dots with a 15~meV range of optical transition energies using a single broadband, chirped laser pulse, laying the foundation for high-bandwidth, multiplexed quantum networks.
Keywords
Cite
@article{arxiv.2311.16982,
title = {Robust Parallel Laser Driving of Quantum Dots for Multiplexing of Quantum Light Sources},
author = {Ajan Ramachandran and Grant R. Wilbur and Reuble Mathew and Allister Mason and Sabine ONeal and Dennis G. Deppe and Kimberley C. Hall},
journal= {arXiv preprint arXiv:2311.16982},
year = {2023}
}