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Controlled buildup of half-quantized thermal conductance in an engineered chiral spin liquid platform

par Sun, Bo-Ye;Bermond, Baptiste;Peralta Gavensky, Lucila ;Bukov, Marin;Zhou, Zheng Wei;Goldman, Nathan
Référence Physical Review Research, 8, 2
Publication Publié, 2026-05

Article révisé par les pairs

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Résumé :

We study thermal transport along the edge of a small chiral spin liquid device coupled to two Ising-chain reservoirs, a platform suitable for quantum-engineered systems. Adiabatically switching on the tunnel couplings to the reservoirs generates a thermal current that dynamically builds up and reaches a quasi-steady-state regime. In this experimentally critical time window, the two-terminal thermal conductance can approach half-quantized values—a hallmark of Majorana-mediated transport—under finely tuned conditions. The results agree with an effective Landauer-Büttiker description in the large-reservoir limit, where energy-resolved transmission rates help identify the optimal parameters to achieve the half-quantized conductance. This work provides a controllable platform to investigate topological thermal transport in engineered spin systems, such as realized in cold-atom and Rydberg-atom settings.