title: Electric-Field-Induced Energy Tuning of On-Demand Entangled-Photon Emission from Self-Assembled Quantum Dots.
abstract: We explore a method to achieve electrical control over the energy of on-demand entangled-photon emission from self-assembled quantum dots (QDs). The device used in our work consists of an electrically tunable diode-like membrane integrated onto a piezoactuator, which is capable of exerting a uniaxial stress on QDs. We theoretically reveal that, through application of the quantum-confined Stark effect to QDs by a vertical electric field, the critical uniaxial stress used to eliminate the fine structure splitting of QDs can be linearly tuned. This feature allows experimental realization of a triggered source of energy-tunable entangled-photon emission. Our demonstration represents an important step toward realization of a solid-state quantum repeater using indistinguishable entangled photons in Bell state measurements.
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Jiaxiang
authors.identifier: 0000-0002-8954-9256
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Eugenio
authors.identifier: 0000-0003-1796-9777
authors.initials: E
authors.lastname: Zallo
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Bianca
authors.initials: B
authors.lastname: Höfer
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Yan
authors.initials: Y
authors.lastname: Chen
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Robert
authors.initials: R
authors.lastname: Keil
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Zopf
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Stefan
authors.initials: S
authors.lastname: Böttner
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.
authors.forename: Fei
authors.initials: F
authors.lastname: Ding
authors.affiliation: Institute for Integrative Nanosciences, IFW Dresden , Helmholtzstraße 20, 01069 Dresden, Germany.|Material Systems for Nanoelectronics, TU Chemnitz , Reichenhainerstraße 70, 09107 Chemnitz, Germany.
authors.forename: Oliver G
authors.initials: OG
authors.lastname: Schmidt
keywords: Entangled-photon sources; energy tuning; quantum dots; quantum-confined Stark effect; uniaxial stress