Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Ultrafast Phenomena and Nanophotonics

Robust parallel laser triggering of quantum light sources

Kimberley C. Hall, Ali Binai-Motlagh, Grant R. Wilbur, Giannis Tolis, Lilly Daw, Ajan P. Ramachandran, Sabine O’Neal, DENNIS GLENN DEPPE

Published Mar 19, 2025• 0 citations
Publisher

Abstract

We report the application of chirped laser pulses to the simultaneous triggering of more than 10 semiconductor quantum dots with optical transitions spanning 15 meV using a single laser pulse and adiabatic rapid passage (ARP), laying the foundation for wavelength division multiplexing schemes. In conjunction with the application of Notch-filtered Adiabatic Rapid Passage (NARP) [9], our work will support the development of high-performance, scalable quantum photonic systems.

DOI
10.1117/12.3042198

Related papers

Multi-NARP laser driving scheme for multiplexed quantum networks

Ali Binai-Motlagh, Grant R. Wilbur, Nour Allam +5 more

We extend the recently developed Notch-filtered Adiabatic Rapid Passage (NARP) scheme for laser-triggered single-photon sources to the simultaneous excitation of multiple emitters with varying transition energies, laying the groundwork for wavelength-division multiplexing in quantum optical networks. Our multi-NARP scheme does not rely on polarization filtering and thus enables the near-unity extraction efficiency of single photons from each quantum dot. Our approach also offers the advantages of robustness to variations in the laser pulse parameters and immunity to excitation-induced dephasing tied to electron–phonon coupling. We show that simultaneous triggering of at least 10 emitters is possible, enabling the development of high-bandwidth quantum networks.

Optica Quantum•Sep 18, 2025•2 citations

Laser driving scheme for solid-state emitters using engineered optical pulses

Kimberley C. Hall, Grant R. Wilbur, Ali Binai-Motlagh +6 more

In this presentation I will describe a new laser driving scheme for triggered high-brightness single photon emitters using a chirped laser pulse possessing a spectral hole resonant with the transition energy of the emitter, referred to as Notch-filtered adiabatic rapid passage (NARP). When combined with optimized photonic structures for enhanced collection efficiency and commercial filters we estimate that NARP would provide less than 10-8 scattered photons per emitted photon with a 4% detection loss together with resonant driving for high photon indistinguishability. We demonstrate inversion using NARP experimentally in a single semiconductor QD.

Photonics for Quantum (PfQ)•Jul 19, 2023•0 citations

Parallel Triggering of Quantum Emitters using Adiabatic Rapid Passage

Grant R. Wilbur, Ajan P. Ramachandran, R Farrow Matthew +5 more

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.

•Jan 1, 2024•0 citations

Quantum State Preparation Using Chirped Laser Pulses in Semiconductor Quantum Dots

Ajan P. Ramachandran

A quantum emitter (QE) is a physical system that can be used to encode a quantum state via some internal degree of freedom (e.g. exciton, electron spin, valley) and is coupled to light via a dipolar transition that enables the conversion of that quantum state into the state of a photon and vice versa. Such QEs can be applied to sources of single and entangled photons for applications in quantum cryptography or quantum imaging and a collection of coupled QEs can be used to realize a small quantum simulator or quantum memory node in a distributed quantum network. Among solid state QE systems, semiconductor quantum dots (QD) are particularly attractive due to their high radiative quantum efficiencies, their strong optical coupling, enabling fast and arbitrary qubit rotations, and their tunable emission in the range of standard telecommunication wavelengths. Adiabatic rapid passage (ARP) is a state preparation scheme that enables the excitation and de-excitation of a QE with a high fidelity even in the presence of fluctuations in experimental parameters such as intensity and frequency of the control laser pulse. This excitation scheme may be used for quantum state initialization in quantum information platforms and for triggering quantum light sources. This thesis work concerns an exploration of the efficacy of ARP for the quantum control of excitons in semiconductor QDs. The experiments carried out in this work show that the impact of phonons may be suppressed for ARP, pointing to the possibility of high-fidelity inversion at elevated temperatures. We also investigate the dependence of the threshold for decoherence suppression on the size and shape of the QD. The experiments performed in this thesis work also quantify the detuning tolerance of ARP. ARP was also used to demonstrate parallel quantum state initialization in two different QDs with different transition energies and dipole moments.

•May 21, 2020•0 citations

Multiplexed Quantum Light States from Nanowire Quantum Dots

Kaiser, Moritz

In this thesis, several optical excitation schemes for single-photon generation in nanowire semiconductor quantum dots were investigated. Fluctuations in the excitation pulse can degrade photon quality and reduce the reliability of the source. These limitations motivated the development of a new excitation scheme called chirped stimulated adiabatic rapid passage. It is designed to be robust against fluctuations in both the energy levels of the quantum system and the laser parameters, including pulse power, spectral detuning, and time delay. Building upon the principles of adiabatic rapid passage, the proposed approach employs an additional chirped stimulation pulse, yielding an enhancement in photon generation by a factor of 1.47 compared to adiabatic rapid passage. These features make the technique promising for the stable generation of single photons, with improved performance under realistic experimental conditions.

•Jan 1, 2025•0 citations

Chirped Laser Driving of Quantum Emitters for Multiplexing in Quantum Networks

Kimberley C. Hall, Ajan P. Ramachandran, Grant R. Wilbur +4 more

Parallel quantum state inversion of more than 10 semiconductor quantum dots is demonstrated using a single chirped laser pulse and adiabatic rapid passage.

Photonics North (PN)•May 28, 2024•0 citations
We report the application of chirped laser pulses to the simultaneous triggering of more than 10 semiconductor quantum dots with optical transitions spanning 15 meV using a single laser pulse and adiabatic rapid passage (ARP), laying the foundation for wavelength division multiplexing schemes. In conjunction with the application of Notch-filtered Adiabatic Rapid Passage (NARP) [9], our work will support the development of high-performance, scalable quantum photonic systems.
We extend the recently developed Notch-filtered Adiabatic Rapid Passage (NARP) scheme for laser-triggered single-photon sources to the simultaneous excitation of multiple emitters with varying transition energies, laying the groundwork for wavelength-division multiplexing in quantum optical networks. Our multi-NARP scheme does not rely on polarization filtering and thus enables the near-unity extraction efficiency of single photons from each quantum dot. Our approach also offers the advantages of robustness to variations in the laser pulse parameters and immunity to excitation-induced dephasing tied to electron–phonon coupling. We show that simultaneous triggering of at least 10 emitters is possible, enabling the development of high-bandwidth quantum networks.
In this presentation I will describe a new laser driving scheme for triggered high-brightness single photon emitters using a chirped laser pulse possessing a spectral hole resonant with the transition energy of the emitter, referred to as Notch-filtered adiabatic rapid passage (NARP). When combined with optimized photonic structures for enhanced collection efficiency and commercial filters we estimate that NARP would provide less than 10-8 scattered photons per emitted photon with a 4% detection loss together with resonant driving for high photon indistinguishability. We demonstrate inversion using NARP experimentally in a single semiconductor QD.
A quantum emitter (QE) is a physical system that can be used to encode a quantum state via some internal degree of freedom (e.g. exciton, electron spin, valley) and is coupled to light via a dipolar transition that enables the conversion of that quantum state into the state of a photon and vice versa. Such QEs can be applied to sources of single and entangled photons for applications in quantum cryptography or quantum imaging and a collection of coupled QEs can be used to realize a small quantum simulator or quantum memory node in a distributed quantum network. Among solid state QE systems, semiconductor quantum dots (QD) are particularly attractive due to their high radiative quantum efficiencies, their strong optical coupling, enabling fast and arbitrary qubit rotations, and their tunable emission in the range of standard telecommunication wavelengths. Adiabatic rapid passage (ARP) is a state preparation scheme that enables the excitation and de-excitation of a QE with a high fidelity even in the presence of fluctuations in experimental parameters such as intensity and frequency of the control laser pulse. This excitation scheme may be used for quantum state initialization in quantum information platforms and for triggering quantum light sources. This thesis work concerns an exploration of the efficacy of ARP for the quantum control of excitons in semiconductor QDs. The experiments carried out in this work show that the impact of phonons may be suppressed for ARP, pointing to the possibility of high-fidelity inversion at elevated temperatures. We also investigate the dependence of the threshold for decoherence suppression on the size and shape of the QD. The experiments performed in this thesis work also quantify the detuning tolerance of ARP. ARP was also used to demonstrate parallel quantum state initialization in two different QDs with different transition energies and dipole moments.
In this thesis, several optical excitation schemes for single-photon generation in nanowire semiconductor quantum dots were investigated. Fluctuations in the excitation pulse can degrade photon quality and reduce the reliability of the source. These limitations motivated the development of a new excitation scheme called chirped stimulated adiabatic rapid passage. It is designed to be robust against fluctuations in both the energy levels of the quantum system and the laser parameters, including pulse power, spectral detuning, and time delay. Building upon the principles of adiabatic rapid passage, the proposed approach employs an additional chirped stimulation pulse, yielding an enhancement in photon generation by a factor of 1.47 compared to adiabatic rapid passage. These features make the technique promising for the stable generation of single photons, with improved performance under realistic experimental conditions.