Search Results - "Högele, Alexander"
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Moiré excitons in MoSe2-WSe2 heterobilayers and heterotrilayers
Published in Nature communications (12-03-2021)“…Layered two-dimensional materials exhibit rich transport and optical phenomena in twisted or lattice-incommensurate heterostructures with spatial variations of…”
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2
Cavity-control of interlayer excitons in van der Waals heterostructures
Published in Nature communications (16-08-2019)“…Monolayer transition metal dichalcogenides integrated in optical microcavities host exciton-polaritons as a hallmark of the strong light-matter coupling…”
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3
Plasmon–Exciton Coupling Using DNA Templates
Published in Nano letters (14-09-2016)“…Coherent energy exchange between plasmons and excitons is a phenomenon that arises in the strong coupling regime resulting in distinct hybrid states. The…”
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4
Exciton g-factors in monolayer and bilayer WSe2 from experiment and theory
Published in Nature communications (10-09-2020)“…The optical properties of monolayer and bilayer transition metal dichalcogenide semiconductors are governed by excitons in different spin and valley…”
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5
Magneto-Optical Chirality in a Coherently Coupled Exciton–Plasmon System
Published in Nano letters (25-01-2023)“…Chirality is a fundamental asymmetry phenomenon, with chiral optical elements exhibiting asymmetric response in reflection or absorption of circularly…”
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6
Synthetic control over the binding configuration of luminescent sp3-defects in single-walled carbon nanotubes
Published in Nature communications (09-04-2021)“…The controlled functionalization of single-walled carbon nanotubes with luminescent sp 3 -defects has created the potential to employ them as quantum-light…”
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7
Tuning the Fröhlich exciton-phonon scattering in monolayer MoS2
Published in Nature communications (18-02-2019)“…Charge carriers in semiconducting transition metal dichalcogenides possess a valley degree of freedom that allows for optoelectronic applications based on the…”
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8
DNA-based self-assembly of chiral plasmonic nanostructures with tailored optical response
Published in Nature (London) (15-03-2012)“…Using DNA origami enables the high-yield production of chiral structures containing nanoparticles arranged in helices, with a tunable optical response…”
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9
Highly Coherent Electron Beam from a Laser-Triggered Tungsten Needle Tip
Published in Physical review letters (05-06-2015)“…We report on a quantitative measurement of the spatial coherence of electrons emitted from a sharp metal needle tip. We investigate the coherence in…”
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10
Cavity-enhanced Raman microscopy of individual carbon nanotubes
Published in Nature communications (12-07-2016)“…Raman spectroscopy reveals chemically specific information and provides label-free insight into the molecular world. However, the signals are intrinsically…”
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11
Quantum-Dot Spin-State Preparation with Near-Unity Fidelity
Published in Science (American Association for the Advancement of Science) (28-04-2006)“…We have demonstrated laser cooling of a single electron spin trapped in a semiconductor quantum dot. Optical coupling of electronic spin states was achieved…”
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12
Nuclear spin physics in quantum dots: An optical investigation
Published in Reviews of modern physics (09-01-2013)“…The mesoscopic spin system formed by the 10 super(4)-10 super(6) nuclear spins in a semiconductor quantum dot offers a unique setting for the study of…”
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13
Bright, long-lived and coherent excitons in carbon nanotube quantum dots
Published in Nature nanotechnology (01-07-2013)“…Carbon nanotubes exhibit a wealth of unique physical properties. By virtue of their exceptionally low mass and extreme stiffness they provide ultrahigh-quality…”
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14
High spatial coherence in multiphoton-photoemitted electron beams
Published in Applied physics letters (01-10-2018)“…Nanometer-sharp metallic tips are known to be excellent electron emitters. They are used in highest-resolution electron microscopes in cold field emission mode…”
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15
Photon Correlation Spectroscopy of Luminescent Quantum Defects in Carbon Nanotubes
Published in Nano letters (09-10-2019)“…Defect-decorated single-wall carbon nanotubes have shown rapid growing potential for imaging, sensing, and the development of room-temperature single-photon…”
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16
Opto-valleytronic imaging of atomically thin semiconductors
Published in Nature nanotechnology (01-04-2017)“…Transition metal dichalcogenide semiconductors represent elementary components of layered heterostructures for emergent technologies beyond conventional…”
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17
The role of momentum-dark excitons in the elementary optical response of bilayer WSe2
Published in Nature communications (03-07-2018)“…Monolayer transition metal dichalcogenides (TMDs) undergo substantial changes in the single-particle band structure and excitonic optical response upon the…”
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18
Hybrid Moiré Excitons and Trions in Twisted MoTe2–MoSe2 Heterobilayers
Published in Nano letters (10-04-2024)“…We report experimental and theoretical studies of MoTe2–MoSe2 heterobilayers with rigid moiré superlattices controlled by the twist angle. Using an effective…”
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19
Conditional Dynamics of Interacting Quantum Dots
Published in Science (American Association for the Advancement of Science) (09-05-2008)“…Conditional quantum dynamics, where the quantum state of one system controls the outcome of measurements on another quantum system, is at the heart of quantum…”
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20
Ubiquity of Exciton Localization in Cryogenic Carbon Nanotubes
Published in Nano letters (11-05-2016)“…We present photoluminescence studies of individual semiconducting single-wall carbon nanotubes at room and cryogenic temperatures. From the analysis of spatial…”
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