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TT: Fachverband Tiefe Temperaturen
TT 56: Superconductivity: Theory I
TT 56.9: Vortrag
Mittwoch, 11. März 2026, 17:15–17:30, CHE/0089
Achieving analogue states of high-Tc superconductivity with current quantum simulators — •Thomas Köhler and Adrian Kantian — SUPA, Institute of Photonics and Quantum Sciences, Heriot-Watt University, EH14 4AS Edinburgh, Scotland, United Kingdom
Employing the recently introduced matrix-product states plus mean-field method (MPS+MF) [Bollmark et al. 2020; 2023; 2025, Marten et al. 2023], we show how to realize the analogue of a high-Tc superconducting state in a t-J bi-plane lattice model with strongly enhanced inter-plane spin-spin coupling. Implementation of such systems using ultra cold atomic lattice gases has been demonstrated using metastable tilted Fermi-Hubbard systems [Hirthe et al. 2023]. We show that t-J bi-planes constructed in this way can achieve a critical temperature Tc for the onset of a correlated state analogous to high-Tc superconductivity that would be accessible within currently reachable entropy-per-particle. We further identify the optimal parameter regimes for such states to be realized, rule out the existence of any competing charge density wave-instabilities, and show how to unambiguously detect the onset of superconducting order.
Keywords: matrix-product states plus mean-field; high-$T_c$ superconductivity; t-J bi-plane