Manuel Nutz

Ultra-stable open micro-cavity platform for closed cycle cryostats

Michael Förg, Jonathan Noé, A. Jose, Sambit Mitra et autres

Open-access micro-cavities are a powerful tool for enhancing light-matter interactions for solid-state quantum and nano systems and are key to advance applications in quantum technologies. In order to achieve good coherence properties of the material, most of them have to be cooled …

Cavity-enhanced photon indistinguishability at room temperature and telecom wavelengths

Lukas Husel, Julian Trapp, Johannes Scherzer, Xiaojian Wu et autres

Indistinguishable single photons in the telecom-bandwidth of optical fibers are indispensable for long-distance quantum communication. Solid-state single photon emitters have achieved excellent performance in key benchmarks, however, the demonstration of indistinguishability at room-temperature remains a major challenge. Here, we report room-temperature photon …

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Seeing the Unseen -- Boosted Absorption Imaging and Spectroscopy Using a Scanning Microresonator

Jonathan Noé, Michael Förg, Manuel Nutz, Florian Steiner et autres

Optical detection of nanoscale objects without relying on fluorescence is a current challenge due to their extremely weak interaction with light. Resonator-enhanced absorption microscopy is a novel tool to heavily boost the light-matter interaction. It combines highly sensitive, spatially resolved imaging with …

Ultra-Sensitive Extinction Measurements of Optically Active Defects in Monolayer MoS2

Florian Sigger, Ines Amersdorffer, Alexander Hötger, Manuel Nutz et autres

We utilize cavity-enhanced extinction spectroscopy to directly quantify the optical absorption of defects in MoS 2 generated by helium ion bombardment. We achieve hyperspectral imaging of specific defect patterns with a detection limit below 0.01% extinction, corresponding to a detectable defect density …

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Signatures of correlations and interactions in the optical spectra of localized excitons in carbon nanotubes

Manuel Nutz

Kohlenstoffnanoröhren sind Nanostrukturen, deren Form einer einatomigen Lage Graphit, aufgerollt zu einem Hohlzylinder, entspricht. Die Ladungsträger in halbleitenden Kohlenstoffnanoröhren bilden stark gebundene Elektron-Loch-Paare (Exzitonen), die Photolumineszenz vom Rand des sichtbaren Spektrums bis in das Telekom-Band emittieren. Häufig sind Exzitonen in Kohlenstoffnanoröhren lokalisiert, …

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Probing Trions at Chemically Tailored Trapping Defects

Hyejin Kwon, Mijin Kim, Manuel Nutz, Nicolai F. Hartmann et autres

High Resolution Image Download MS PowerPoint Slide Trions, charged excitons that are reminiscent of hydrogen and positronium ions, have been intensively studied for energy harvesting, light-emitting diodes, lasing, and quantum computing applications because of their inherent connection with electron spin and dark …

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Photon Correlation Spectroscopy of Luminescent Quantum Defects in Carbon Nanotubes

Manuel Nutz, Jiaxiang Zhang, Mijin Kim, Hyejin Kwon et autres

Defect-decorated single-wall carbon nanotubes have shown rapid growing potential for imaging, sensing, and the development of room-temperature single-photon sources. The key to the highly nonclassical emission statistics is the discrete energy spectrum of defect-localized excitons. However, variations in defect configurations give rise …

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Environmental Electrometry with Luminescent Carbon Nanotubes

Jonathan Noé, Manuel Nutz, Jonathan Reschauer, Nicolas Morell et autres

We demonstrate that localized excitons in luminescent carbon nanotubes can be utilized to study electrostatic fluctuations in the nanotube environment with sensitivity down to the elementary charge. By monitoring the temporal evolution of the cryogenic photoluminescence from individual carbon nanotubes grown on …

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Opto-valleytronic imaging of atomically thin semiconductors

Jessica Lindlau, Léo Colombier, Manuel Nutz, Sina Najmaei et autres

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Synthesis and cryogenic spectroscopy of narrow-diameter single-wall carbon nanotubes

Matthias Hofmann, Jonathan Noé, Manuel Nutz, Alexander Kneer et autres

We report chemical vapor deposition and cryogenic photoluminescence studies of narrow-diameter single-wall carbon nanotubes. Our systematic study of synthesis parameters identifies means to control the average length, diameter, and areal density of carbon nanotubes grown on silica substrates. Using synthesis conditions that …

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