Quantum Dot Molecule Devices with Optical Control of Charge Status and Electronic Control of Coupling
dc.contributor.author | Bopp, Frederik | |
dc.contributor.author | Rojas, Jonathan | |
dc.contributor.author | Revenga, Natalia | |
dc.contributor.author | Riedl, Hubert | |
dc.contributor.author | Sbresny, Friedrich | |
dc.contributor.author | Boos, Katarina | |
dc.contributor.author | Simmet, Tobias | |
dc.contributor.author | Ahmadi, Arash | |
dc.contributor.author | Gershoni, David | |
dc.contributor.author | Kasprzak, Jacek | |
dc.contributor.author | Ludwig, Arne | |
dc.contributor.author | Reitzenstein, Stephan | |
dc.contributor.author | Wieck, Andreas | |
dc.contributor.author | Reuter, Dirk | |
dc.contributor.author | Müller, Kai | |
dc.contributor.author | Finley, Jonathan J. | |
dc.contributor.other | Wiley | |
dc.date.accessioned | 2022-11-09T14:25:47Z | |
dc.date.available | 2022-11-09T14:25:47Z | |
dc.date.issued | 2022-08-25 | |
dc.description.abstract | Tunnel-coupled pairs of optically active quantum dots—quantum dot molecules (QDMs)—offer the possibility to combine excellent optical properties such as strong light-matter coupling with two-spin singlet–triplet (S-T0) qubits having extended coherence times. The S-T0 basis formed using two spins is inherently protected against electric and magnetic field noise. However, since a single gate voltage is typically used to stabilize the charge occupancy of the dots and control the inter-dot orbital couplings, operation of the S-T0 qubits under optimal conditions remains challenging. Here, an electric field tunable QDM that can be optically charged with one (1h) or two holes (2h) on demand is presented. A four-phase optical and electric field control sequence facilitates the sequential preparation of the 2h charge state and subsequently allows flexible control of the inter-dot coupling. Charges are loaded via optical pumping and electron tunnel ionization. One- and two-hole charging efficiencies of (93.5 ± 0.8)% and (80.5 ± 1.3)% are achieved, respectively. Combining efficient charge state preparation and precise setting of inter-dot coupling allows for the control of few-spin qubits, as would be required for the on-demand generation of 2D photonic cluster states or quantum transduction between microwaves and photons. | en |
dc.description.sponsorship | BMBF, 16KIS0874, Verbundprojekt: Q.Link.Extension - Q.Link.X -; Teilvorhaben: Gekoppelte Halbleiter-Quantenpunkte für einen modularen Quantenrepeater: elektrische Kontrolle, Kohärenz und Spektroskopie | |
dc.description.sponsorship | BMBF, 16KISQ027, Verbundprojekt: QR.X - Quantenrepeater.Link - QR.X -; Teilvorhaben: Few-Spin-QD-Nanostrukturen für messbasierte Quanten-Repeater Links | |
dc.description.sponsorship | BMBF, 16KISQ014, Verbundprojekt: Quantenrepeater.Link - QR.X -; Teilvorhaben: Spektralkontrollierbare Quantenpunktmolekül-Bauelemente und verschränkte Photonenpaarquellen mit on-chip Faserkopplung | |
dc.description.sponsorship | BMBF, 16KISQ012, Verbundprojekt: QR.X - Quantenrepeater.Link - QR.X -; Teilvorhaben: Festkörperbasierte Schlüsselbauelemente für die Quantenkommunikation | |
dc.description.sponsorship | BMBF, 16KISQ009, Verbundprojekt: QR.X - Quantenrepeater.Link - QR.X -; Teilvorhaben: Molekularstrahlepitaktisches Wachstum von p-i-n-Dioden mit Quantenpunkt-Molekül-Emittern | |
dc.description.sponsorship | EC/H2020/862035/EU/Many-photon quantum entanglement/QLUSTER | |
dc.description.sponsorship | DFG, 390814868, EXC 2111: Munich Center for Quantum Science and Technology (MCQST) | |
dc.description.sponsorship | BMBF, 13N14846, Modulare Photonische Quantentechnologien (MOQUA) | |
dc.identifier.eissn | 2511-9044 | |
dc.identifier.uri | https://depositonce.tu-berlin.de/handle/11303/17648 | |
dc.identifier.uri | https://doi.org/10.14279/depositonce-16432 | |
dc.language.iso | en | |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | |
dc.subject.ddc | 530 Physik | de |
dc.subject.other | charge state control | en |
dc.subject.other | electron tunneling | en |
dc.subject.other | hole storage | en |
dc.subject.other | inter-dot coupling | en |
dc.subject.other | optical charging | en |
dc.subject.other | quantum dot molecules | en |
dc.title | Quantum Dot Molecule Devices with Optical Control of Charge Status and Electronic Control of Coupling | en |
dc.type | Article | |
dc.type.version | publishedVersion | |
dcterms.bibliographicCitation.articlenumber | 2200049 | |
dcterms.bibliographicCitation.doi | 10.1002/qute.202200049 | |
dcterms.bibliographicCitation.issue | 10 | |
dcterms.bibliographicCitation.journaltitle | Advanced Quantum Technologies | |
dcterms.bibliographicCitation.originalpublishername | Wiley | |
dcterms.bibliographicCitation.originalpublisherplace | New York, NY | |
dcterms.bibliographicCitation.volume | 5 | |
tub.accessrights.dnb | free | |
tub.affiliation | Fak. 2 Mathematik und Naturwissenschaften::Inst. Festkörperphysik::AG Optoelektronik und Quantenbauelemente | |
tub.publisher.universityorinstitution | Technische Universität Berlin |