2021/07/07 by Friedrich Sbresny, Lukas Hanschke, Eva Schöll +10
Computer Science · Physics and Astronomy · #Biexciton #Excitation #Jitter #Photon #Polarization (electrochemistry) #Pulse (music) #Quantum #Quantum Information and Cryptography #Quantum dot #Quantum optics and atomic interactions #Semiconductor Quantum Structures and Devices #Stimulated emission #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.128.093603
6 pages, 4 figures
arxiv created 2021/07/07 · openalex publication_date 2022/03/04 · arxiv updated 2022/03/14 · openalex created_date 2022/04/03 · openalex updated_date 2026/08/05
We propose a scheme for the generation of highly indistinguishable single photons using semiconductor quantum dots and demonstrate its performance and potential. The scheme is based on the resonant two-photon excitation of the biexciton followed by stimulation of the biexciton to selectively prepare an exciton. Quantum-optical simulations and experiments are in good agreement and show that the scheme provides significant advantages over previously demonstrated excitation methods. The two-photon excitation of the biexciton suppresses re-excitation and enables ultra-low multi-photon errors, while the precisely timed stimulation pulse results in very low timing jitter of the photons, and consequently, high indistinguishability. Since both control laser fields are detuned from the emission energy, the scheme does not require polarization filtering, facilitating high brightness approaching unity. Moreover, the polarization of the emitted single photons is controlled by the stimulation laser field, such that the polarization of the quantum light is deterministically programmable.