463 citations · 1.3k across the 15 of their papers we have counts for
16 papers
Measuring the temperature and heating rate of a single ion by imaging
Bharath Srivathsan, Martin Fischer, Lucas Alber +3
We present a technique based on high resolution imaging to measure the absolute temperature and the heating rate of a single ion trapped at the focus of a deep parabolic mirror. We…
Towards wafer-scale diamond nano- and quantum technologies
Richard Nelz, Johannes Görlitz, Dennis Herrmann +8
We investigate native nitrogen (NV) and silicon vacancy (SiV) color centers in commercially available, heteroepitaxial, wafer-sized, mm thick, single-crystal diamond. We observe si…
Off-resonant emission of photon pairs in nonlinear optical cavities
Valentin A. Averchenko, Gerhard Schunk, Michael Förtsch +4
Cavity-assisted spontaneous parametric down-conversion (SPDC) and spontaneous four-wave mixing (SFWM) in nonlinear optical materials are practical and versatile methods to generate…
Quantum probe of an on-chip broadband interferometer for quantum microwave photonics
P. Eder, T. Ramos, J. Goetz +11
Quantum microwave photonics aims at generating, routing, and manipulating propagating quantum microwave fields in the spirit of optical photonics. To this end, the strong nonlinear…
Shifting the phase of a coherent beam with a Yb ion: influence of the scattering cross section
Martin Fischer, Bharath Srivathsan, Lucas Alber +3
We discuss and measure the phase shift imposed onto a radially polarized light beam when focusing it onto an ion. In the derivation of the expected phase shif…
Focusing characteristics of a 4 parabolic mirror light-matter interface
Lucas Alber, Martin Fischer, Marianne Bader +3
Focusing with a 4 parabolic mirror allows for concentrating light from nearly the complete solid angle, whereas focusing with a single microscope objective limits the angle cone…
Localization of narrowband single photon emitters in nanodiamonds
Kerem Bray, Russell Sandstrom, Christopher Elbadawi +6
Diamond nanocrystals that host room temperature narrowband single photon emitters are highly sought after for applications in nanophotonics and bio-imaging. However, current unders…
Site selective growth of heteroepitaxial diamond nanoislands containing single SiV centers
Carsten Arend, Patrick Appel, Jonas Nils Becker +7
We demonstrate the controlled preparation of heteroepitaxial diamond nano- and microstructures on silicon wafer based iridium films as hosts for single color centers. Our approach…
Resonant photo-ionization of Yb+ to Yb2+
Simon Heugel, Martin Fischer, Vladimir Elman +3
We demonstrate the controlled creation of a ion by photo-ionizing with weak continuous-wave lasers at ultraviolet wavelengths. The ph…
Deterministic coupling of a single silicon-vacancy color center to a photonic crystal cavity in diamond
Janine Riedrich-Möller, Carsten Arend, Christoph Pauly +5
Deterministic coupling of single solid-state emitters to nanocavities is the key for integrated quantum information devices. We here fabricate a photonic crystal cavity around a pr…
Efficient saturation of an ion in free space
Martin Fischer, Marianne Bader, Robert Maiwald +3
We report on the demonstration of a light-matter interface coupling light to a single ion in free space. The interface is realized through a parabolic mirror…
Low temperature investigations of single silicon vacancy colour centres in diamond
Elke Neu, Christian Hepp, Michael Hauschild +6
We study single silicon vacancy (SiV) centres in chemical vapour deposition (CVD) nanodiamonds on iridium as well as an ensemble of SiV centres in a high quality, low stress CVD di…
Electronic transitions of single silicon vacancy centers in the near-infrared spectral region
Elke Neu, Roland Albrecht, Martin Fischer +3
Photoluminescence (PL) spectra of single silicon vacancy (SiV) centers frequently feature very narrow room temperature PL lines in the near-infrared (NIR) spectral region, mostly b…
One- and two-dimensional photonic crystal micro-cavities in single crystal diamond
Janine Riedrich-Möller, Laura Kipfstuhl, Christian Hepp +10
The development of solid-state photonic quantum technologies is of great interest for fundamental studies of light-matter interactions and quantum information science. Diamond has…
Fluorescence and polarization spectroscopy of single silicon vacancy centers in heteroepitaxial nanodiamonds on iridium
Elke Neu, Martin Fischer, Stefan Gsell +2
We introduce an advanced material system for the production and spectroscopy of single silicon vacancy (SiV) color centers in diamond. We use microwave plasma chemical vapor deposi…
Single photon emission from silicon-vacancy centres in CVD-nano-diamonds on iridium
Elke Neu, David Steinmetz, Janine Riedrich-Moeller +4
We introduce a process for the fabrication of high quality, spatially isolated nano-diamonds on iridium via microwave plasma assisted CVD-growth. We perform spectroscopy of single…