A5000812483- Quantum optics and atomic interactions
- Quantum Information and Cryptography
- Nuclear physics research studies
- Quantum Computing Algorithms and Architecture
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Semiconductor Quantum Structures and Devices
- Quantum Chromodynamics and Particle Interactions
- Acoustic Wave Resonator Technologies
- Particle physics theoretical and experimental studies
- Advanced NMR Techniques and Applications
- Physics of Superconductivity and Magnetism
- Quantum Mechanics and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Near-Field Optical Microscopy
University of Bayreuth
2023-2025
University of Bonn
2012-2013
We calculate the neutron-60Ca S-wave scattering phase shifts using state of art coupled-cluster theory combined with modern ab initio interactions derived from chiral effective theory. Effects three-nucleon forces are included schematically as density dependent nucleon-nucleon interactions. This information is halo field in order to investigate 60Ca-neutron-neutron system. predict correlations between different three-body observables and two-neutron separation energy 62Ca. provides evidence...
Resonant P-wave interactions can be described by a minimal zero-range model defined truncated effective range expansion, so that the only 2-body interaction parameters are inverse scattering volume 1/a_P and r_P. This formulated as local quantum field theory with between atom fields molecular field. In two-atom sector, is renormalizable, but it has unphysical behavior at high energies, because there negative-probability states momentum scale sector three atoms, two of which identical,...
Abstract Semiconductor quantum dots are a versatile source of single photons with tunable properties to be used in quantum‐cryptographic applications. A crucial figure merit the emitted is photon number coherence (PNC), which impacts security many communication protocols. In process single‐photon generation, dot as solid‐state object subject an interaction phonons, can therefore indirectly affect PNC. this study, origin PNC optically excited and its phonons elaborated upon. contrast...
Quantum communication networks rely on quantum cryptographic protocols including key distribution (QKD) using single photons. A critical element regarding the security of QKD is photon number coherence (PNC), i.e. phase relation between zero and one-photon Fock state, which critically depends excitation scheme. Thus, to obtain flying qubits with desired properties, optimal pumping schemes for emitters need be selected. Semiconductor dots generate on-demand photons high purity...
We study general features of three-meson bound states using the Y(4660) as an example. Here is assumed to be either a two-body state f_0(980), itself K and Kbar, psi'= psi(2s), or three-body psi', K, Kbar. In particular, we investigate in detail interplay various scales inherent problem, namely f_0 binding energy, Y K-psi' scattering length. This allows us understand under which circumstances substructure f_0(980) can neglected description Y(4660).
Abstract Quantum communication networks rely on quantum cryptographic protocols including key distribution (QKD) using single photons. A critical element regarding the security of QKD is photon number coherence (PNC), i.e. phase relation between zero and one-photon Fock state, which critically depends excitation scheme. Thus, to obtain flying qubits with desired properties, optimal pumping schemes for emitters need be selected. Semiconductor dots generate on-demand photons high purity...
Semiconductor quantum dots are a versatile source of single photons with tunable properties to be used in quantum-cryptographic applications. A crucial figure merit the emitted is photon number coherence (PNC), which impacts security many communication protocols. In process single-photon generation, dot as solid-state object subject an interaction phonons, can therefore indirectly affect PNC. this paper, we elaborate on origin PNC optically excited and how it affected by phonons. contrast...