A5062332790- Quantum and electron transport phenomena
- Quantum many-body systems
- Quantum, superfluid, helium dynamics
- Spectroscopy and Quantum Chemical Studies
- Quantum Computing Algorithms and Architecture
- Photoreceptor and optogenetics research
- Advanced Memory and Neural Computing
- Quantum chaos and dynamical systems
- Advanced Chemical Physics Studies
- Quantum-Dot Cellular Automata
- Various Chemistry Research Topics
- Cold Atom Physics and Bose-Einstein Condensates
- Quantum Information and Cryptography
- Strong Light-Matter Interactions
- Physics of Superconductivity and Magnetism
- Quantum Mechanics and Applications
Munich Center for Quantum Science and Technology
2020-2023
Ludwig-Maximilians-Universität München
2020-2023
A recent development in quantum chemistry has established the mutual information between orbitals as a major descriptor of electronic structure. This already facilitated remarkable improvements numerical methods and may lead to more comprehensive foundation for chemical bonding theory. Building on this promising development, our work provides refined discussion theoretical concepts by introducing physical correlation its separation into classical parts distinctive quantifiers In particular,...
In this work, we study singlet fission in tetracene para-dimers, covalently linked by a phenyl group. contrast to most previous studies, account for the full quantum dynamics of combined excitonic and vibrational system. For our simulations, choose numerically unbiased representation molecule’s wave function, enabling us compare with experiments, exhibiting good agreement. Having access function allows detail post-quench excitons. Here, one main findings is identification time scale t0 ≈ 35...
Recent advances in numerical methods significantly pushed forward the understanding of electrons coupled to quantized lattice vibrations. At this stage, it becomes increasingly important also account for effects physically inevitable environments. Here, we combine state-of-the-art tensor-network and quantum trajectories order study impact dissipation on realistic condensed matter models including highly excited phononic modes. In particular, transport properties Hubbard-Holstein Hamiltonian...
Experimental realizations of topologically ordered states matter, such as fractional quantum Hall states, with cold atoms are now within reach. In particular, optical lattices provide a promising platform for the realization and characterization where novel detection schemes enable an unprecedented microscopic understanding. Here we show that central charge can be directly measured in current atom experiments using number entropy proxy entanglement entropy. We perform density-matrix...
Systems of correlated quantum matter can be a steep challenge to any would-be method solution. Matrix-product state (MPS)-based methods describe 1D systems quasiexactly, but often struggle retain sufficient bipartite entanglement accurately approximate 2D already. Conversely, Quantum Monte Carlo (QMC) approaches, based on sampling probability distribution, generally and 3D with an error that decays systematically growing size. However, QMC suffer from the so-called sign problem, makes...
Recent advances in numerical methods significantly pushed forward the understanding of electrons coupled to quantized lattice vibrations. At this stage, it becomes increasingly important also account for effects physically inevitable environments. In particular, we study transport properties Hubbard-Holstein Hamiltonian that models a large class materials characterized by strong electron-phonon coupling, contact with dissipative environment. Even one-dimensional and isolated case, simulating...
Experimental realizations of topologically ordered states matter, such as fractional quantum Hall states, with cold atoms are now within reach. In particular, optical lattices provide a promising platform for the realization and characterization where novel detection schemes enable an unprecedented microscopic understanding. Here we show that central charge can be directly measured in current atom experiments using number entropy proxy entanglement entropy. We perform density-matrix...