131 citations · 633 across the 24 of their papers we have counts for
25 papers
All-Optical Spin Initialization via a Cavity Broadened Optical Transition in On-Chip Hybrid Quantum Photonics
Lukas Antoniuk, Niklas Lettner, Anna P. Ovvyan +7
Hybrid quantum photonic systems connect classical photonics to the quantum world and promise to deliver efficient light-matter quantum interfaces while leveraging the advantages of…
Enhanced Spectral Density of a Single Germanium Vacancy Center in a Nanodiamond by Cavity-Integration
Florian Feuchtmayr, Robert Berghaus, Selene Sachero +6
Color centers in diamond, among them the negatively-charged germanium vacancy (GeV), are promising candidates for many applications of quantum optics such as a quantum network.…
Two-Photon Interference from Silicon-Vacancy Centers in Remote Nanodiamonds
Richard Waltrich, Marco Klotz, Viatcheslav Agafonov +1
The generation of indistinguishable photons is a key requirement for solid-state quantum emitters as a viable source for applications in quantum technologies. Restricting the dimen…
Ultracompact single-photon sources of linearly polarized vortex beams
Xujing Liu, Yinhui Kan, Shailesh Kumar +5
Ultracompact chip-integrated single-photon sources of collimated beams with polarizationencoded states are crucial for integrated quantum technologies. However, most of currently a…
Room Temperature Fiber-Coupled single-photon devices based on Colloidal Quantum Dots and SiV centers in Back Excited Nanoantennas
Boaz Lubotzky, Alexander Nazarov, Hamza Abudayyeh +7
We demonstrate an important step towards on chip integration of single photon sources operating at room temperature fiber coupling of a directional quantum emitter with back-excita…
Scattering holography designed metasurfaces for channeling single-photon emission
Danylo Komisar, Shailesh Kumar, Yinhui Kan +5
Channelling single-photon emission in multiple well-defined directions and simultaneously controlling its polarization characteristics is highly desirable for numerous quantum tech…
Sub-to-super-Poissonian photon statistics in cathodoluminescence of color center ensembles in isolated diamond crystals
Saskia Fiedler, Sergii Morozov, Danylo Komisar +8
Impurity-vacancy centers in diamond offer a new class of robust photon sources with versatile quantum properties. While individual color centers commonly act as single-photon sourc…
A Quantum Repeater Platform based on Single SiV Centers in Diamond with Cavity-Assisted, All-Optical Spin Access and Fast Coherent Driving
Gregor Bayer, Robert Berghaus, Selene Sachero +8
Quantum key distribution enables secure communication based on the principles of quantum mechanics. The distance in fiber-based quantum communication is limited to about a hundred…
Hybrid quantum nanophotonic devices with color centers in nanodiamonds
Swetapadma Sahoo, Valery Davydov, Viatcheslav Agafonov +1
Optically active color centers in nanodiamonds offer unique opportunities for generating and manipulating quantum states of light. These mechanically, chemically, and optically rob…
Prolonged orbital relaxation by locally modified phonon density of states for SiV center in nanodiamonds
Marco Klotz, Konstantin G. Fehler, Elena S. Steiger +8
Coherent quantum systems are a key resource for emerging quantum technology. Solid-state spin systems are of particular importance for compact and scalable devices. However, intera…
A Robust Coherent Single-Photon Interface for Moderate- NA Optics Based on SiV Center in Nanodiamonds and a Plasmonic Bullseye Antenna
Richard Waltrich, Hamza Abudayyeh, Boaz Lubotzky +7
Coherent exchange of single photons is at the heart of applied Quantum Optics. The negatively-charged silicon vacancy center in diamond is among most promising sources for coherent…
Hybrid quantum photonics based on artificial atoms placed inside one hole of a photonic crystal cavity
Konstantin G. Fehler, Lukas Antoniuk, Niklas Lettner +7
Spin-based quantum photonics promise to realize distributed quantum computing and quantum networks. The performance depends on efficient entanglement distribution, where the effici…
Preparing single SiV center in nanodiamonds for external, optical coupling with access to all degrees of freedom
Stefan Häußler, Lukas Hartung, Konstantin G. Fehler +6
Optical coupling enables intermediate- and long-range interactions between distant quantum emitters. Such interaction may be the basic element in bottom-up approaches of coupled sp…
Purcell-Enhanced Emission from Individual SiV Center in Nanodiamonds Coupled to a SiN-Based, Photonic Crystal Cavity
Konstantin G. Fehler, Anna P. Ovvyan, Lukas Antoniuk +6
Hybrid quantum photonics combines classical photonics with quantum emitters in a postprocessing step. It facilitates to link ideal quantum light sources to optimized photonic platf…
Nanophotonic approaches for integrated quantum photonics
Stefano Pierini, Mackrine Nahra, Maxime Joos +10
Photons for quantum technologies have been identified early on as a very good candidate for carrying quantum information encoded onto them, either by polarization encoding, time en…
Silicon-vacancy color centers in Si- and Si,P-doped nanodiamonds: thermal susceptibilities of photo luminescence band at 740 nm
Sumin Choi, Viatcheslav N. Agafonov, Valery A. Davydov +2
We have characterized thermal susceptibilities of the spectral band at 740 nm of silicon-vacancy (SiV) centers in Si- and Si,P-doped nanodiamonds over a temperature range from 295…
Ultrasensitive all-optical thermometry using nanodiamonds with high concentration of silicon-vacancy centres and multiparametric data analysis
Sumin Choi, Viatcheslav N. Agafonov, Valery A. Davydov +1
Nanoscale thermometry is paramount to study primary processes of heat transfer in solids and is a subject of hot debate in cell biology. Here we report ultrafast temperature sensin…
Unidirectional single-photon emission from germanium-vacancy zero-phonon lines: Deterministic emitter-waveguide interfacing at plasmonic hot spots
Hamidreza Siampour, Ou Wang, Vladimir A. Zenin +10
Striving for nanometer-sized solid-state single-photon sources, we investigate atom-like quantum emitters based on single germanium vacancy (GeV) centers isolated in crystalline na…
Single Silicon Vacancy Centers in 10-Nanometer Diamonds for Quantum Information Applications
Stepan V. Bolshedvorskii, Anton I. Zeleneev, Vadim V. Vorobyov +12
Ultra-small, low-strain, artificially produced diamonds with an internal, active color center have substantial potential for quantum information processing and biomedical applicati…
Single SiV centers in low-strain nanodiamonds with bulk-like spectral properties and nano-manipulation capabilities
Lachlan J. Rogers, Ou Wang, Yan Liu +7
We report on the isolation of single SiV centers in nanodiamonds. We observe the fine-structure of single SiV center with improved inhomogeneous ensemble linewidth below th…
On-chip excitation of single germanium-vacancies in nanodiamonds embedded in plasmonic waveguides
Hamidreza Siampour, Shailesh Kumar, Valery A. Davydov +3
Monolithic integration of quantum emitters in nanoscale plasmonic circuitry requires low-loss plasmonic configurations capable of confining light well below the diffraction limit.…
Varying temperature and silicon content in nanodiamond growth: effects on silicon-vacancy centers
Sumin Choi, Victor Leong, Valery A. Davydov +4
Nanodiamonds containing color centers open up many applications in quantum information processing, metrology, and quantum sensing. In particular, silicon vacancy (SiV) centers are…
All-optical nanoscale thermometry with silicon-vacancy centers in diamond
Christian T. Nguyen, Ruffin E. Evans, Alp Sipahigil +7
We demonstrate an all-optical thermometer based on an ensemble of silicon-vacancy centers (SiVs) in diamond by utilizing a temperature dependent shift of the SiV optical zero-phono…
Excitation of nanowire surface plasmons by silicon vacancy centers in nanodiamonds
Shailesh Kumar, Valery A. Davydov, Viatcheslav N. Agafonov +1
Silicon vacancy (SiV) centers in diamonds have emerged as a very promising candidate for quantum emitter due to their narrow emission line resulting in their indistinguishability.…