Daniel Riedel
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View article: Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond
Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond Open
The negatively charged tin-vacancy center in diamond (SnV−) is an emerging platform for building the next generation of long-distance quantum networks. This is due to the SnV−’s favorable optical and spin properties including bright emissi…
View article: Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond
Single-Shot Readout and Weak Measurement of a Tin-Vacancy Qubit in Diamond Open
The negatively charged tin-vacancy center in diamond (SnV$^-$) is an emerging platform for building the next generation of long-distance quantum networks. This is due to the SnV$^-$'s favorable optical and spin properties including bright …
View article: Cryogenic packaging of nanophotonic devices with a low coupling loss <b>&lt;</b>1 dB
Cryogenic packaging of nanophotonic devices with a low coupling loss <b><</b>1 dB Open
Robust, low-loss photonic packaging of on-chip nanophotonic circuits is a key enabling technology for the deployment of integrated photonics in a variety of classical and quantum technologies including optical communications and quantum co…
View article: Microwave Spin Control of a Tin-Vacancy Qubit in Diamond
Microwave Spin Control of a Tin-Vacancy Qubit in Diamond Open
The negatively charged tin-vacancy (SnV-) center in diamond is a promising\nsolid-state qubit for applications in quantum networking due to its high\nquantum efficiency, strong zero phonon emission, and reduced sensitivity to\nelectrical n…
View article: Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate
Efficient Photonic Integration of Diamond Color Centers and Thin-Film Lithium Niobate Open
On-chip photonic quantum circuits with integrated quantum memories have the potential to radically progress hardware for quantum information processing. In particular, negatively charged group-IV color centers in diamond are promising cand…
View article: Microwave Spin Control of a Tin-Vacancy Qubit in Diamond
Microwave Spin Control of a Tin-Vacancy Qubit in Diamond Open
The negatively charged tin-vacancy (SnV-) center in diamond is a promising solid-state qubit for applications in quantum networking due to its high quantum efficiency, strong zero phonon emission, and reduced sensitivity to electrical nois…
View article: Cryogenic packaging of nanophotonic devices with a low coupling loss < 1 dB
Cryogenic packaging of nanophotonic devices with a low coupling loss < 1 dB Open
Robust, low-loss photonic packaging of on-chip nanophotonic circuits is a key enabling technology for the deployment of integrated photonics in a variety of classical and quantum technologies including optical communications and quantum co…
View article: A hybrid quantum photonic interface for $^{171}$Yb solid-state qubits
A hybrid quantum photonic interface for $^{171}$Yb solid-state qubits Open
$^{171}$Yb$^{3+}$ in YVO$_4$ is a promising candidate for building quantum networks with good optical addressability, excellent spin properties and a secondary nuclear-spin quantum register. However, the associated long optical lifetime ne…
View article: Microcavity platform for widely tunable optical double resonance
Microcavity platform for widely tunable optical double resonance Open
Tunable open-access Fabry–Perot microcavities are versatile and widely applied in different areas of photonics research. The open geometry of such cavities enables the flexible integration of thin dielectric membranes. Efficient coupling o…
View article: A diamond-confined open microcavity featuring a high quality-factor and a small mode-volume
A diamond-confined open microcavity featuring a high quality-factor and a small mode-volume Open
With a highly coherent, optically addressable electron spin, the nitrogen-vacancy (NV) center in diamond is a promising candidate for a node in a quantum network. A resonant microcavity can boost the flux of coherent photons emerging from …
View article: Widely-tunable, doubly-resonant Raman scattering on diamond in an open microcavity
Widely-tunable, doubly-resonant Raman scattering on diamond in an open microcavity Open
Raman lasers based on bulk diamond are a valuable resource for generating coherent light in wavelength regimes where no common laser diodes are available. Nevertheless, the widespread use of such lasers is limited by their high threshold p…
View article: Quantum Photonic Interface for Tin-Vacancy Centers in Diamond
Quantum Photonic Interface for Tin-Vacancy Centers in Diamond Open
The realization of quantum networks critically depends on establishing efficient, coherent light-matter interfaces. Optically active spins in diamond have emerged as promising quantum nodes based on their spin-selective optical transitions…
View article: Electrical Tuning of Tin-Vacancy Centers in Diamond
Electrical Tuning of Tin-Vacancy Centers in Diamond Open
Group-IV color centers in diamond have attracted significant attention as solid-state spin qubits because of their excellent optical and spin properties. Among these color centers, the tin-vacancy (Sn-V-) center is of particular interest b…
View article: High quality-factor diamond-confined open microcavity
High quality-factor diamond-confined open microcavity Open
With a highly coherent, optically addressable electron spin, the nitrogen vacancy (NV) centre in diamond is a promising candidate for a node in a quantum network. However, the NV centre is a poor source of coherent single photons owing to …
View article: Cavity-Enhanced Raman Scattering for <i>In Situ</i> Alignment and Characterization of Solid-State Microcavities
Cavity-Enhanced Raman Scattering for <i>In Situ</i> Alignment and Characterization of Solid-State Microcavities Open
We report cavity-enhanced Raman scattering from a single-crystal diamond membrane embedded in a highly miniaturized fully-tunable Fabry-P\'{e}rot cavity. The Raman intensity is enhanced 58.8-fold compared to the corresponding confocal meas…
View article: A gated quantum dot far in the strong-coupling regime of cavity-QED at optical frequencies
A gated quantum dot far in the strong-coupling regime of cavity-QED at optical frequencies Open
The strong-coupling regime of cavity-quantum-electrodynamics (cQED) represents light-matter interaction at the fully quantum level. Adding a single photon shifts the resonance frequencies, a profound nonlinearity. cQED is a test-bed of qua…
View article: Advanced Fabrication of Single-Crystal Diamond Membranes for Quantum Technologies
Advanced Fabrication of Single-Crystal Diamond Membranes for Quantum Technologies Open
Many promising applications of single crystal diamond and its color centers as sensor platform and in photonics require free-standing membranes with a thickness ranging from several micrometers to the few 100 nm range. In this work, we pre…
View article: Advanced Fabrication of Single-crystal Diamond Membranes for Quantum Technologies
Advanced Fabrication of Single-crystal Diamond Membranes for Quantum Technologies Open
Many promising applications of single crystal diamond and its color centers as sensor platform and in photonics require free-standing membranes with a thickness ranging from several micrometers to the few 100 nm range. In this work, we pre…
View article: Advanced Fabrication of Single-crystal Diamond Membranes for Quantum\n Technologies
Advanced Fabrication of Single-crystal Diamond Membranes for Quantum\n Technologies Open
Many promising applications of single crystal diamond and its color centers\nas sensor platform and in photonics require free-standing membranes with a\nthickness ranging from several micrometers to the few 100 nm range. In this\nwork, we …
View article: Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond
Deterministic Enhancement of Coherent Photon Generation from a Nitrogen-Vacancy Center in Ultrapure Diamond Open
The nitrogen-vacancy (NV) center in diamond has an optically addressable, highly coherent spin. However, a NV center even in high-quality single-crystalline material is a very poor source of single photons: Extraction out of the high-index…
View article: Determination of the complex refractive index of powder phosphors
Determination of the complex refractive index of powder phosphors Open
We demonstrate a novel 2-step method to precisely determine both n and k of phosphors, luminescent inorganic particles, in the visible spectrum.To measure n we modified the Becke Line immersion method and verified its applicability in the …
View article: 2694209.csv
2694209.csv Open
Sellmeier coefficients for n dispersions in the spectral region 370-700 nm
View article: Phosphor Particles for Luminescent Down-Shifting in Photovoltaics: Determination of Complex Refractive Indices
Phosphor Particles for Luminescent Down-Shifting in Photovoltaics: Determination of Complex Refractive Indices Open
We demonstrate a novel two-step method for accurate determination of the complex refractive indices of phosphor materials in particulate form. The real part of the refractive index is first measured at a number of selected wavelengths usin…
View article: 2694208.csv
2694208.csv Open
Measured refractive index n of phosphors
View article: 2694211.csv
2694211.csv Open
k of phosphors in the spectral region 300-525 nm
View article: Engineering of the photonic environment of single nitrogen-vacancy centers in diamond
Engineering of the photonic environment of single nitrogen-vacancy centers in diamond Open
The nitrogen-vacancy (NV) center in diamond has an optically addressable, highly coherent spin. However, an NV center even in high quality single-crystalline material is a very poor source of single photons: extraction out of the high-inde…