Single-photon generation through cavity-STIRAP in a neutral QD embedded in a micropillar cavity: an FDTD model study

Conference item

We investigate cavity-assisted Stimulated Raman Adiabatic passage (STIRAP) schemes in semiconductor quantum dots (QDs) embedded in an optical cavity as a route for generation of high-quality single photons with programmable waveform. This work addresses the need for high-purity, indistinguishable photons in linear quantum computing, boson sampling, and quantum communications. We develop a time-dependent Maxwellpseudospin model of single-photon generation through cavity-assisted adiabatic passage in a Λ-system isolated in a neutral InAs QD in a realistic GaAs/AlGaAs micropillar cavity. As a model Λ-system, we consider QD biexciton triplet states coupled to dark-exciton states by a circularly polarised pulse and a cavity field. Our simulations demonstrate control of the emitted single-photon pulse waveform by the driving pulse characteristics: shape, duration, intensity and detuning.

Authors: Slavcheva, GM; Koleva, M; Mueller, K; Taylor, R

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Society of Photo-optical Instrumentation Engineers
• Journal: Proceedings of SPIE
• Volume: 12243
• Article number: 122430E
• Publication date: 2022-07-19
• Event title: Photonics for Quantum 2022
• Event location: Rochester, NY, USA
• Event website: https://spie.org/conferences-and-exhibitions/photonics-for-quantum
• Event start date: 2022-06-06
• Event end date: 2022-06-10
• DOI: 10.1117/12.2635200
• EISSN: 1996-756X
• ISSN: 0277-786X
• ISBN: 978-1-5106-5475-4
• Language: English
• Keywords: micropillar cavities; single photons; Finite-Difference Time-Domain method; FFR; cavity-QED; semiconductor quantum dots; STIRAP; maxwellpseudospin equations