Quantum-dot single photon source performance with quasi-coherent excited state preparation schemes

Gavin Crowder; Lora Ramunno; Stephen Hughes

doi:10.1117/12.3026974

2 August 2024 Quantum-dot single photon source performance with quasi-coherent excited state preparation schemes

Gavin Crowder, Lora Ramunno, Stephen Hughes

Author Affiliations +

Proceedings Volume PC13106, Photonics for Quantum 2024; PC131060M (2024) https://doi.org/10.1117/12.3026974
Event: Photonics for Quantum, 2024, Waterloo, Ontario, Canada

Abstract

The preparation of quantum-dot qubits in the excited state is an integral part of the performance of an on-demand single photon source. Recent excitation schemes strategically use pulses that avoid spectral overlap with the qubit emission for easier differentiation between the pump and signal. In this work, we look at the robustness of two such pumping schemes, (i) a dichromatic pulse, and (ii) a notch-filtered adiabatic rapid passage (NARP) approach, in the presence of phonon coupling. We find that due to large instantaneous pulse strengths, the dichromatic pulse suffers from phonon-induced pure dephasing and can have up to 50% worse performance as a single photon source. On the other hand, the NARP approach is more robust against the phonon coupling due to a weaker and smoother pulse profile.

Conference Presentation

Citation Download Citation

Gavin Crowder, Lora Ramunno, and Stephen Hughes "Quantum-dot single photon source performance with quasi-coherent excited state preparation schemes", Proc. SPIE PC13106, Photonics for Quantum 2024, PC131060M (2 August 2024); https://doi.org/10.1117/12.3026974

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE