A5000928970- Quantum many-body systems
- Advanced Condensed Matter Physics
- Physics of Superconductivity and Magnetism
- Quantum and electron transport phenomena
- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Thermodynamics and Statistical Mechanics
- Advanced Fiber Optic Sensors
- Theoretical and Computational Physics
- Model Reduction and Neural Networks
- Topological Materials and Phenomena
- Advanced Optical Sensing Technologies
- Quantum, superfluid, helium dynamics
- Optical Coherence Tomography Applications
- Magnetic properties of thin films
Weizmann Institute of Science
2018-2022
We study the dynamics of thermalization following a quantum quench using tensor-network methods. Contrary to common belief that rapid growth entanglement and resulting exponential bond dimension restricts simulations short times, we demonstrate long time limit local observables can be well captured time-dependent variational principle. This allows extract transport coefficients such as energy diffusion constant from with rather small dimensions. further characteristic chaotic wave precedes...
Purification is a tool that allows to represent mixed quantum states as pure on enlarged Hilbert spaces. A purification of given state not unique and its entanglement strongly depends the particular choice made. Moreover, in one-dimensional systems, amount linked how efficiently purified can be represented using matrix-product (MPS). We introduce an MPS based method find minimally entangled representation by iteratively minimizing second Renyi entropy. First, we consider thermofield double...
There are many advantages to using direct frequency modulation for OFDR based DAS. However, achieving sufficiently linear scan via is challenging and poses limits on the parameters. A novel method analyzing sinusoidal modulated light presented demonstrated both static dynamic sensing. SFS-OFDR projects measured signal onto appropriate phase terms obtain spatial information. Thus, by it possible make use of offered without limitations posed linearity requirement.
The authors use non-local transformations to describe spin-chain arrays in terms of partons and emergent gauge fields the scheme produce parent Hamiltonians for gapped phases, including chiral non-chiral spin liquids.
Electrons undergoing a Mott transition may shed their charge but persist as neutral excitations of quantum spin liquid (QSL). We introduce concrete two-dimensional models exhibiting this exotic behavior they from superconducting or topological phases into fully charge-localized insulators. study these transitions and the confinement fermions at second symmetry-broken phase. In process, we also derive coupled-wire parent Hamiltonians for non-Abelian QSL ${\mathbb{Z}}_{4}$ QSL.
Strong interactions between electrons in two dimensions can realize phases where their spins and charges separate. We capture this phenomenon within a dual formulation. Focusing on square lattices, we analyze the long-wavelength structure of vortices when microscopic particles---electrons or spinful bosons---are near half-filling. These conditions lead to compact gauge theory spinons chargons, which arise as fundamental topological defects low-energy vortices. The formulation is particularly...