Deterministically fabricated strain-tunable quantum dot single-photon sources emitting in the telecom O-band
dc.contributor.author | Srocka, N. | |
dc.contributor.author | Mrowiński, P. | |
dc.contributor.author | Große, J. | |
dc.contributor.author | Schmidt, M. | |
dc.contributor.author | Rodt, Sven | |
dc.contributor.author | Reitzenstein, Stephan | |
dc.date.accessioned | 2021-01-13T08:06:35Z | |
dc.date.available | 2021-01-13T08:06:35Z | |
dc.date.issued | 2020-12-01 | |
dc.description.abstract | Most quantum communication schemes aim at the long-distance transmission of quantum information. In the quantum repeater concept, the transmission line is subdivided into shorter links interconnected by entanglement distribution via Bell-state measurements to overcome inherent channel losses. This concept requires on-demand single-photon sources with a high degree of multi-photon suppression and high indistinguishability within each repeater node. For a successful operation of the repeater, a spectral matching of remote quantum light sources is essential. We present a spectrally tunable single-photon source emitting in the telecom O-band with the potential to function as a building block of a quantum communication network based on optical fibers. A thin membrane of GaAs embedding InGaAs quantum dots (QDs) is attached onto a piezoelectric actuator via gold thermocompression bonding. Here, the thin gold layer acts simultaneously as an electrical contact, strain transmission medium, and broadband backside mirror for the QD-micromesa. The nanofabrication of the QD-micromesa is based on in situ electron-beam lithography, which makes it possible to integrate pre-selected single QDs deterministically into the center of monolithic micromesa structures. The QD pre-selection is based on distinct single-QD properties, signal intensity, and emission energy. In combination with strain-induced fine tuning, this offers a robust method to achieve spectral resonance in the emission of remote QDs. We show that the spectral tuning has no detectable influence on the multi-photon suppression with g(2)(0) as low as 2%–4% and that the emission can be stabilized to an accuracy of 4 μeV using a closed-loop optical feedback. | en |
dc.identifier.eissn | 1077-3118 | |
dc.identifier.issn | 0003-6951 | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/12427 | |
dc.identifier.uri | http://dx.doi.org/10.14279/depositonce-11269 | |
dc.language.iso | en | en |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
dc.subject.ddc | 530 Physik | de |
dc.subject.other | nanofabrication | en |
dc.subject.other | optical fibers | en |
dc.subject.other | quantum dots | en |
dc.subject.other | electrical components | en |
dc.subject.other | telecommunications engineering | en |
dc.subject.other | electron-beam lithography | en |
dc.subject.other | scanning electron microscopy | en |
dc.subject.other | quantum information | en |
dc.subject.other | lasers | en |
dc.subject.other | emission spectroscopy | en |
dc.title | Deterministically fabricated strain-tunable quantum dot single-photon sources emitting in the telecom O-band | en |
dc.type | Article | en |
dc.type.version | publishedVersion | en |
dcterms.bibliographicCitation.articlenumber | 224001 | en |
dcterms.bibliographicCitation.doi | 10.1063/5.0030991 | en |
dcterms.bibliographicCitation.issue | 22 | en |
dcterms.bibliographicCitation.journaltitle | Applied Physics Letters | en |
dcterms.bibliographicCitation.originalpublishername | American Institute of Physics | en |
dcterms.bibliographicCitation.originalpublisherplace | New York, NY | en |
dcterms.bibliographicCitation.volume | 117 | en |
tub.accessrights.dnb | domain | * |
tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Festkörperphysik::AG Optoelektronik und Quantenbauelemente | de |
tub.affiliation.faculty | Fak. 2 Mathematik und Naturwissenschaften | de |
tub.affiliation.group | AG Optoelektronik und Quantenbauelemente | de |
tub.affiliation.institute | Inst. Festkörperphysik | de |
tub.publisher.universityorinstitution | Technische Universität Berlin | en |