Kontakt
 
ForschungTopics
Spin and Transport Model

Spin and Transport Model

Understanding transport, dynamics and spin physics in many-body quantum systems from solid-state devices to cold atoms, molecules and trapped ions.

Contributions to QuantumFrontiers

  • This Topical Group focuses on the properties of many-body quantum systems, and especially their dynamics, as well as on its possible applications, in particular in the context of quantum simulations.
  • Focusing on different possible implementations (polar lattice gases, ion Coulomb crystals, Twisted-bilayer lattices) we are particularly interested in understanding challenging questions, in particular out-of-equilibrium many-body dynamics.
  • We establish new concrete scientific collaborations between groups in PTB, TUBS, and LUH.

Collaborative Innovation

  • Quantum many-body dynamics: non-ergodicity, many-body localization, quantum scars (Karrasch TUBS, Osborne, Santos LUH)
  • Quantum simulation of extended lattice models using polar molecules in optical lattices: spin models, interaction-induced localization (S. Ospelkaus, Santos LUH)
  • Transport in ion Coulomb crystals (Mehlstäubler PTB, Santos LUH)
  • Transport in Twisted-Bilayer-like optical lattices, localization in quasi-crystal geometries, analogies with twisted-bilayer-graphene (Recher TUBS, Santos LUH)
  • Simulation of many-body dynamics in NISQ devices: error mitigation strategies, implementation in QVLS devices (Osborne, Santos LUH)

Scientific Output

  • Publications

    Jamadagni A, Weimer H. Operational definition of topological order. Physical Review B. 2022 Aug 31;106(8). 085143.

    doi.org

    arxiv.org/abs/2005.06501

    ,

    doi.org/10.1103/PhysRevB.106.085143

    Probst B, Virtanen P, Recher P. Sub- to Super-Poissonian crossover of current noise in helical edge states coupled to a spin impurity in a magnetic field. Physical Review B. 2022 Aug 4;106(8). 085406.

    doi.org/10.1103/PhysRevB.106.085406

    Singh VP, Weimer H. Driven-Dissipative Criticality within the Discrete Truncated Wigner Approximation. Physical Review Letters. 2022 Mai 17;128(20). 200602.

    doi.org/10.48550/arXiv.2108.07273

    ,

    doi.org/10.1103/PhysRevLett.128.200602

    Voges KK, Gersema P, Hartmann T, Ospelkaus-Schwarzer S, Zenesini A. Hyperfine dependent atom-molecule loss analyzed by the analytic solution of few-body loss equations. Physical Review Research. 2022 Jun;4(2). 023184.

    doi.org/10.48550/arXiv.2109.03605

    ,

    doi.org/10.1103/PhysRevResearch.4.023184

    De Beule C, Dominguez F, Recher P. Effective Floquet model for minimally twisted bilayer graphene. Physical Review B. 2021 Mai 21;103(19). 195432.

    doi.org/10.1103/PhysRevB.103.195432

    Gersema P, Voges KK, Meyer zum Alten Borgloh M, Koch L, Hartmann T, Zenesini A et al. Probing Photoinduced Two-Body Loss of Ultracold Nonreactive Bosonic Na23Rb87 and Na23K39 Molecules. Physical review letters. 2021 Okt 11;127(16). 163401.

    doi.org/10.1103/PhysRevLett.127.163401

    Jamadagni A, Ospelkaus S, Santos L, Weimer H. Quantum Zeno-based detection and state engineering of ultracold polar molecules. Physical Review Research. 2021 Sep 2;3(3). 033208.

    doi.org/10.1103/PhysRevResearch.3.033208

    Kaebert P, Stepanova M, Poll T, Petzold M, Xu S, Siercke M et al. Characterizing the Zeeman slowing force for 40Ca19F molecules. New journal of physics. 2021 Sep 8;23(9). 093013.

    doi.org/10.1088/1367-2630/ac1ed7

    Kiethe J, Timm L, Landa H, Kalincev D, Morigi G, Mehlstäubler TE. Finite-temperature spectrum at the symmetry-breaking linear to zigzag transition. Physical Review B. 2021 Mär 19;103(10). 104106.

    doi.org/10.1103/PhysRevB.103.104106

    Li WH, Dhar A, Deng X, Santos L. Cluster dynamics in two-dimensional lattice gases with intersite interactions. Physical Review A. 2021 Apr 23;103(4). 043331.

    doi.org/10.1103/PhysRevA.103.043331

    Li W-H, Deng X, Santos L. Hilbert Space Shattering and Disorder-Free Localization in Polar Lattice Gases. Physical Review Letters. 2021 Dez 20;127(26). 260601 .

    doi.org/10.48550/arXiv.2103.13780

    ,

    doi.org/10.1103/PhysRevLett.127.260601

    Madsen KA, Brouwer PW, Recher P, Silvestrov PG. Interference effects induced by a precessing easy-plane magnet coupled to a helical edge state. Physical Review B. 2021 Mär 24;103(11). 115142.

    doi.org/10.1103/PhysRevB.103.115142

    Timm L, Rüffert LA, Weimer H, Santos L, Mehlstäubler TE. Quantum nanofriction in trapped ion chains with a topological defect. Physical Review Research. 2021 Nov 29;3(4). 043141 .

    doi.org/10.48550/arXiv.2108.07635

    ,

    doi.org/10.1103/PhysRevResearch.3.043141

    Xu S, Kaebert P, Stepanova M, Poll T, Siercke M, Ospelkaus S. Maximizing the capture velocity of molecular magneto-optical traps with Bayesian optimization. New journal of physics. 2021 Jun 21;23(6). 063062.

    doi.org/10.1088/1367-2630/ac06e6

    De Beule C, Dominguez F, Recher P. Aharonov-Bohm Oscillations in Minimally Twisted Bilayer Graphene. Physical review letters. 2020 Aug 28;125(9). 096402.

    doi.org/10.1103/PhysRevLett.125.096402

    Deng X, Masella G, Pupillo G, Santos L. Universal algebraic growth of entanglement entropy in many-body localized systems with power-law interactions. Physical Review Letters. 2020 Jun 29;125(1):010401. 010401.

    doi.org/10.1103/PhysRevLett.125.010401

    Li W-H, Dhar A, Deng X, Kasamatsu K, Barbiero L, Santos L. Disorderless Quasi-localization of Polar Gases in One-Dimensional Lattices. Physical Review Letters. 2020 Jan 10;124(1). 010404.

    doi.org/10.48550/arXiv.1901.09762

    ,

    doi.org/10.1103/PhysRevLett.124.010404

    Novik EG, Trauzettel B, Recher P. Transport signatures of a junction between a quantum spin Hall system and a chiral topological superconductor. Physical Review B. 2020 Jun 15;101(23). 235308.

    doi.org/10.1103/PhysRevB.101.235308

    Pistorius T, Kazemi J, Weimer H. Quantum Many-Body Dynamics of Driven-Dissipative Rydberg Polaritons. Physical review letters. 2020 Dez 30;125(26). 263604.

    doi.org/10.48550/arXiv.2003.10463

    ,

    doi.org/10.1103/PhysRevLett.125.263604

    Schuray A, Rammler M, Recher P. Signatures of the Majorana spin in electrical transport through a Majorana nanowire. Physical Review B. 2020 Jul 15;102(4). 045303.

    doi.org/10.1103/PhysRevB.102.045303

    Voges KK, Gersema P, Meyer Zum Alten Borgloh M, Schulze TA, Hartmann T, Zenesini A et al. Ultracold Gas of Bosonic Na 23 K 39 Ground-State Molecules. Physical review letters. 2020 Aug 21;125(8). 083401.

    doi.org/10.1103/physrevlett.125.083401

    Weimer H, Timm L, Santos LS, Mehlstäubler TE. Energy localization in an atomic chain with a topological soliton. Physical Review Research. 2020 Aug 5;2(3). 033198.

    doi.org/10.1103/PhysRevResearch.2.033198

    ,

    doi.org/10.1103/physrevresearch.2.033198

    ,

    doi.org/10.48550/arXiv.1910.02135

    Whitlock S, Wildhagen H, Weimer H, Weidemüller M. Diffusive to Nonergodic Dipolar Transport in a Dissipative Atomic Medium. Physical review letters. 2019 Nov;123(21). 213606.

    doi.org/10.48550/arXiv.1809.07532

    ,

    doi.org/10.1103/PhysRevLett.123.213606

TG Members

  • Involved Members and their Relevant Expertise
    Members Institution Relevant Expertise
    Luis Santos, Leader LUH Theory of Dynamics of Manybody Quantum Systems; Twisted-bilayer-graphene physics in ultracold atoms in optical potentials
    Hendrik Weimer LUH Theory of Dynamics of Manybody Quantum Systems
    N.N. LUH Theory of Dynamics of Manybody Quantum Systems
    Silke Ospelkaus LUH Exotic Spin Systems with Molecules; Application of Ultracold Molecular Systems for Precision Measurements and Quantum Many-Body Physics
    Mirco Siercke LUH Exotic Spin Systems with Molecules
    Tanja Mehlstäubler PTB / LUH Integrated Chip Traps and Optical Components; Dynamics of Ion Coulomb Crystals
    Luca Rüffert PTB Integrated Chip Traps and Optical Components; Dynamics of Ion Coulomb Crystals
    Daniel Vadlejch PTB Integrated Chip Traps and Optical Components; Dynamics of Ion Coulomb Crystals
    Lars Timm PTB / LUH Dynamics of ion Coulomb Crystals
    Christian Ospelkaus LUH / PTB Scalable Surface-Electrode Ion Traps
    Patrik Recher TUBS Theory of Emergent Correlated Quantum Matter; Josephson Junctions; Twisted Bilayer Graphene; Twisted-bilayer-graphene physics in ultracold atoms in optical potentials
    Peter Silvestrov TUBS Twisted Bilayer Graphene
    Wolfram Brenig TUBS strongly correlated electron systems; quantum transport, quantum critical systems; low dimensional quantum magnets
    Andrey Surzhykov PTB / TUBS Light-Matter Interfaces and Dynamics
    Peter Lemmens TUBS Spin liquids in 2D frustrated spin lattice models
    Michael Oestreich LUH Spin and charge carrier dynamics in complex semiconductor nanostructures; spin noise spectroscopy
    Jens Hübner LUH Spin and charge carrier dynamics in complex semiconductor nanostructures; spin noise spectroscopy
    Eduard Sauter LUH Spin and charge carrier dynamics in complex semiconductor nanostructures; spin noise spectroscopy
    Kai Hühn LUH Spin and charge carrier dynamics in complex semiconductor nanostructures; spin noise spectroscopy
    Pavel Sterin LUH Spin and charge carrier dynamics in complex semiconductor nanostructures; spin noise spectroscopy
    Christoph Karrasch TUBS Strongly-correlated systems; non-equilibrium dynamics; Matrix Product State techniques; Functional Renormalization group; Transport through quantum dots and wires
    Tobias Osborne LUH Tensor network techniques; Quantum Neural Networks