报告题目 (Title)：Shortcuts to adiabaticity for longitudinal spin-photon interfaces in quantum dots（量子点中纵向自旋声子界面的量子绝热捷径）

报告人 (Speaker)：陈玺 教授（马德里材料科学研究所）

报告时间 (Time)：2026年5月29日（周五）下午2:00-5:00

报告地点 (Place)：校本部G601

邀请人 (Inviter)：张永平

主办部门：理学院物理系

摘要 (Abstract)：

    Longitudinal spin--photon coupling in semiconductor quantum dots provides a promising route toward fast and flexible quantum control. In particular, hole-spin qubits in Si and Ge quantum dots exhibit strong electrically tunable spin-orbit interaction and anisotropic g-tensors, enabling the spin-photon interaction to be tuned from transverse to longitudinal by adjusting the magnetic-field orientation. In the longitudinal regime, the resonator field modulates the qubit energy splitting without inducing spin flips, which naturally suppresses unwanted excitation exchange and enables quantum nondemolition operations, fast entangling gates, and reduced backaction.