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Parallel Triggering of Quantum Emitters using Adiabatic Rapid Passage

Grant R. Wilbur, Ajan P. Ramachandran, R Farrow Matthew, Jasleen Kaur Jagde, Palwinder Singh, Sabine O’Neal, DENNIS GLENN DEPPE, Kimberley C. Hall

Published Jan 1, 2024• 0 citations
Publisher

Abstract

By the application of chirped laser pulses to ensembles of quantum dots, we demonstrate the simultaneous triggering of > 10 quantum dots using adiabatic rapid passage.
DOI
10.1364/cleo_at.2024.ath4g.5

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For a scalable photonic device producing entangled photons, it is desirable to have multiple quantum emitters in an ensemble that can be collectively excited, despite their spectral variability. For quantum dots, Rabi rotation, the most popular method for resonant excitation, cannot assure a universal, highly efficient excited state preparation, because of its sensitivity to the excitation parameters. In contrast, Adiabatic Rapid Passage (ARP), relying on chirped optical pulses, is immune to quantum dot spectral inhomogeneity. Here, we advocate the robustness of ARP for simultaneous excitation of the biexciton states of multiple quantum dots. For positive chirps, we find that there is also regime of phonon advantage that widens the tolerance range of spectral detunings. Using the same laser pulse we demonstrate the simultaneous excitation of energetically and spatially distinct quantum dots. Being able to generate spatially multiplexed entangled photon pairs is a big step towards the scalability of photonic devices.