Robust Parallel Laser Driving of Quantum Dots for Multiplexing of Quantum Light Sources

• URL: http://arxiv.org/abs/2311.16982v1
• Date: Tue, 28 Nov 2023 17:32:45 GMT
• Title: Robust Parallel Laser Driving of Quantum Dots for Multiplexing of Quantum Light Sources
• Authors: Ajan Ramachandran, Grant R. Wilbur, Reuble Mathew, Allister Mason, Sabine ONeal, Dennis G. Deppe, and Kimberley C. Hall
• Abstract summary: We show the simultaneous triggering of >10 quantum dots using adiabatic rapid passage. We show that high-fidelity quantum state is possible in a system of quantum dots with a 15meV range of optical transition energies.
• Score: 0.1806830971023738
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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