A5030900865- Diamond and Carbon-based Materials Research
- Advanced Fiber Laser Technologies
- Quantum optics and atomic interactions
- Fatigue and fracture mechanics
- Mechanical and Optical Resonators
- Quantum Information and Cryptography
- High Temperature Alloys and Creep
- Laser-Matter Interactions and Applications
- Advanced Electron Microscopy Techniques and Applications
- Metallurgy and Material Forming
- Metal Forming Simulation Techniques
- High-Velocity Impact and Material Behavior
- Microstructure and Mechanical Properties of Steels
- Laser Material Processing Techniques
- Magneto-Optical Properties and Applications
- Nonlinear Optical Materials Studies
- Photonic and Optical Devices
- High-pressure geophysics and materials
Center for Integrated Quantum Science and Technology
2022-2024
FZI Research Center for Information Technology
2007
Coherent quantum systems are a key resource for emerging technology. Solid-state spin of particular importance compact and scalable devices. However, interaction with the solid-state host degrades coherence properties. The negatively charged silicon vacancy center in diamond is such an example. While spectral properties outstanding, optical protected by defects symmetry, susceptible to rapid orbital relaxation limiting dephasing time. A prolongation time therefore utmost urgency has been...
Abstract Large-scale quantum communication networks require repeaters due to the signal attenuation in optical fibers. Ideal repeater nodes efficiently link a memory with photons serving as flying qubits. Color centers diamond, particularly negatively charged silicon vacancy center, are promising candidates establish such nodes. Inefficient connection between color center’s spin fiber is major obstacle, that could be resolved by utilizing resonators. Here, we couple individual incorporated...
Hybrid quantum photonic systems connect classical photonics to the world and promise deliver efficient light-matter interfaces while leveraging advantages of both, quantum, subsystems. However, combining efficient, scalable solid-state with desirable optical spin properties remains a formidable challenge. In particular, access individual states coherent mapping photons unsolved for hybrid systems. this paper, we demonstrate all-optical initialization readout electron negatively charged...
Abstract The search for long-lived quantum memories, which can be efficiently interfaced with flying qubits, is longstanding. One possible solution to use the electron spin of a color center in diamond mediate interaction between nuclear and photon. Realizing this nanodiamond furthermore facilitates integration into photonic devices enables realization hybrid systems access memories. Here, we investigated environment negatively charged silicon-vacancy centers demonstrate strong coupling its...
Abstract The generation of indistinguishable photons is a key requirement for solid-state quantum emitters as viable source applications in technologies. Restricting the dimensions host to size well below wavelength light emitted by defect-center enables efficient external optical coupling, example, hybrid integration into photonic devices. However, stringent restrictions on result severe limitations spectral properties reducing indistinguishability photons. Here, we demonstrate two-photon...
Quantum key distribution enables secure communication based on the principles of quantum mechanics. The distance in fiber-based is limited to about a hundred kilometers due signal attenuation. Thus, repeaters are required establish large-scale networks. Ideal repeater nodes possess memory which efficiently connected photons, carrier information. Color centers diamond and, particular, negatively-charged silicon-vacancy promising candidates such nodes. major obstacle an inefficient connection...
Solid-state spin defects, such as color centers in diamond, are among the most promising candidates for scalable and integrated quantum technologies. In particular, good optical properties of silicon-vacancy diamond combined with naturally occurring exceptionally coherent nuclear spins serve a building block networking applications. Here, we show that leveraging an ultra-high strained center inside nanodiamond allows us to coherently efficiently control its electron spin, while mitigating...
The generation of indistinguishable photons is a key requirement for solid-state quantum emitters as viable source applications in technologies. Restricting the dimensions host to size well below wavelength light emitted by defect-center enables efficient external optical coupling, example hybrid integration into photonic devices. However, stringent restrictions on result severe limitations spectral properties reducing indistinguishability photons. Here, we demonstrate two-photon...
Hybrid quantum photonic systems connect classical photonics to the world and promise deliver efficient light-matter interfaces while leveraging advantages of both, quantum, subsystems. However, combining efficient, scalable solid state with desirable optical spin properties remains a formidable challenge. In particular access individual states coherent mapping photons unsolved for these systems. this letter, we demonstrate all-optical initialization readout electronic negatively-charged...
The search for long-lived quantum memories, which can be efficiently interfaced with flying qubits is longstanding. One possible solution to use the electron spin of a color center in diamond mediate interaction between nuclear and photon. Realizing this nanodiamond furthermore facilitates integration into photonic devices enables realization hybrid systems access memories. Here, we investigated environment negatively-charged Silicon-Vacancy centers demonstrate strong coupling its spin,...