标题： 范德瓦尔斯磁体中强自旋-磁振子耦合 显示英文标题

标题： Strong spin-magnon coupling in a van der Waals magnet with tunable chiral symmetry

摘要： 量子技术需要能够与玻色子激发态相干耦合的平台。 光子在腔量子电动力学中传统上扮演了这一角色，但使用固态玻色子实现相同目标仍然具有挑战性。 在这里，我们展示了分子自旋量子比特与范德华反磁性绝缘体中的磁振子之间强且可调的自旋-磁振子耦合。 使用 [Gd(W$_5$O$_{18}$)$_{2}$]$^{9-}$作为自旋系综和 CrSBr 作为磁振子谐振器，我们观察到了非交叉和相干混合，首次实现了磁振子量子电动力学。 关键的是，通过旋转磁场，我们可以将磁振子对称性从线性动态地变为手性，从而实现耦合强度的原位调节。 我们的结果确立了磁振子腔作为具有磁性材料的可扩展手性量子光学平台。 显示英文摘要

摘要： Quantum technologies require platforms that can coherently interface qubits with bosonic excitations. Photons have traditionally played this role in cavity quantum electrodynamics, but achieving the same goal using solid-state bosons remains challenging. Here we demonstrate strong and tunable spin-magnon coupling between molecular spin qubits and magnons in a van der Waals antiferromagnetic insulator. Using [Gd(W$_5$O$_{18}$)$_{2}$]$^{9-}$ as the spin ensemble and CrSBr as the magnonic resonator, we observe anticrossings and coherent hybridization, realizing magnon quantum electrodynamics for the first time. Crucially, by rotating the magnetic field, we can dynamically change the magnon symmetry from linear to chiral, enabling in-situ tuning of the coupling strength. Our results establish magnonic cavities as a platform for scalable chiral quantum optics with magnetic materials.