Frontiers of quantum physics

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Dissipation-induced quantum homogenization for temporal information processing

Physical Review A American Physical Society (APS) 111:1 (2025) 012622

Authors:

Alexander Yosifov, Aditya Iyer, Vlatko Vedral
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Quantum-information methods for quantum gravity laboratory-based tests

Reviews of Modern Physics American Physical Society (APS) 97:1 (2025) 015006

Authors:

Chiara Marletto, Vlatko Vedral
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Experimental demonstration of quantum causal inference via noninvasive measurements

(2024)

Authors:

Hongfeng Liu, Xiangjing Liu, Qian Chen, Yixian Qiu, Vlatko Vedral, Xinfang Nie, Oscar Dahlsten, Dawei Lu

Quantum causal inference via scattering circuits in NMR

(2024)

Authors:

Hongfeng Liu, Xiangjing Liu, Qian Chen, Yixian Qiu, Vlatko Vedral, Xinfang Nie, Oscar Dahlsten, Dawei Lu

Ferromagnetic interlayer coupling in FeSe1−xSx superconductors revealed by inelastic neutron scattering

Physical Review B (condensed matter and materials physics) American Physical Society 110:17 (2024) 174503

Authors:

Mingwei Ma, Philippe Bourges, Yvan Sidis, Jinzhao Sun, Guoqing Wang, Kazuki Iida, Kazuya Kamazawa, Jitae T Park, Frederic Bourdarot, Zhian Ren, Yuan Li

Abstract:

FeSe1-xSx superconductors are commonly considered layered van der Waals materials with negligible interlayer coupling. Here, using inelastic neutron scattering to study spin excitations in single-crystal samples, we reveal that the magnetic coupling between adjacent Fe layers is ferromagnetic in nature, making the system different from most unconventional superconductors including iron pnictides. The weak interlayer coupling is estimated to be Jc∼ 0.2 meV, in agreement with the short spin-spin correlation length ζc∼0.2c along the c axis. The results provide an experimental basis for establishing a microscopic theoretical model to describe the absence of magnetic order in FeSe1-xSx.
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