675 citations · 2.1k across the 16 of their papers we have counts for
16 papers
High resolution, High contrast optical interface for defect qubits
Jong Sung Moon, Haneul Lee, Jin Hee Lee +10
Point defects in crystals provide important building blocks for quantum applications. To initialize, control, and read-out their quantum states, an efficient optical interface for…
Bright single photon sources in lateral silicon carbide light emitting diodes
Matthias Widmann, Matthias Niethammer, Takahiro Makino +7
Single-photon emitting devices have been identified as an important building block for applications in quantum information and quantum communication. They allow to transduce and co…
Electrical charge state manipulation of single silicon vacancies in a silicon carbide quantum optoelectronic device
Matthias Widmann, Matthias Niethammer, Dmitry Yu. Fedyanin +14
Colour centres with long-lived spins are established platforms for quantum sensing and quantum information applications. Colour centres exist in different charge states, each of th…
Coherent electrical readout of defect spins in 4H-SiC by photo-ionization at ambient conditions
Matthias Niethammer, Matthias Widmann, Torsten Rendler +11
Quantum technology relies on proper hardware, enabling coherent quantum state control as well as efficient quantum state readout. In this regard, wide-bandgap semiconductors are an…
Spectrally stable defect qubits with no inversion symmetry for robust spin-to-photon interface
Péter Udvarhelyi, Roland Nagy, Florian Kaiser +3
Scalable spin-to-photon interfaces require quantum emitters with strong optical transition dipole moment and low coupling to phonons and stray electric fields. It is known that par…
High-fidelity spin and optical control of single silicon vacancy centres in silicon carbide
Roland Nagy, Matthias Niethammer, Matthias Widmann +14
Optically interfaced spins in the solid promise scalable quantum networks. Robust and reliable optical properties have so far been restricted to systems with inversion symmetry. He…
Robust and efficient control of spin probes in a complex (biological) environment. Towards sensing of fast temperature fluctuations
Philipp Konzelmann, Torsten Rendler, Ville Bergholm +9
We present an optimized scheme for nanoscale measurements of temperature in a complex environment using the nitrogen-vacancy center in nanodiamonds. To this end we combine a Ramsey…
Quantum properties of dichroic silicon vacancies in silicon carbide
Roland Nagy, Matthias Widmann, Matthias Niethammer +12
The controlled generation and manipulation of atom-like defects in solids has a wide range of applications in quantum technology. Although various defect centres have displayed pro…
Scalable Quantum Photonics with Single Color Centers in Silicon Carbide
Marina Radulaski, Matthias Widmann, Matthias Niethammer +9
Silicon carbide is a promising platform for single photon sources, quantum bits (qubits) and nanoscale sensors based on individual color centers. Towards this goal, we develop a sc…
Vector magnetometry using silicon vacancies in 4H-SiC at ambient conditions
Matthias Niethammer, Matthias Widmann, Sang-Yun Lee +6
Point defects in solids promise precise measurements of various quantities. Especially magnetic field sensing using the spin of point defects has been of great interest recently. W…
Vector magnetometry based on S=3/2 electronic spins
Sang-Yun Lee, Matthias Niethammer, Jörg Wrachtrup
Electronic spin systems with S>1/2 provide an efficient method for DC vector magnetometry, since the conventional electron spin resonance spectra at a given magnetic field reflect…
Single Molecule DNA Detection with an Atomic Vapor Notch Filter
Denis Uhland, Torsten Rendler, Matthias Widmann +3
The detection of single molecules has facilitated many advances in life- and material-sciences. Commonly, it founds on the fluorescence detection of single molecules, which are for…
Electron Spin Decoherence in Silicon Carbide Nuclear Spin Bath
Li-Ping Yang, Christian Burk, Mattias Widmann +3
In this paper, we study the electron spin decoherence of single defects in silicon carbide (SiC) nuclear spin bath. We find that, although the natural abundance of (…
Coherent control of single spins in silicon carbide at room temperature
Matthias Widmann, Sang-Yun Lee, Torsten Rendler +15
Spins in solids are cornerstone elements of quantum spintronics. Leading contenders such as defects in diamond, or individual phosphorous dopants in silicon have shown spectacular…
Readout and control of a single nuclear spin with a meta-stable electron spin ancilla
Sang-Yun Lee, Matthias Widmann, Torsten Rendler +12
Electron and nuclear spins associated with point defects in insulators are promising systems for solid state quantum technology. While the electron spin usually is used for readout…
Modulation frequency dependence of continuous-wave optically/electrically detected magnetic resonance
Sang-Yun Lee, Seoyoung Paik, Dane R. McCamey +1
Continuous wave optically and electrically detected magnetic resonance spectroscopy (cwODMR/cwEDMR) allow the investigation of paramagnetic states involved in spin-dependent transi…