自旋依赖广义压缩在混合自旋-振子量子处理器中的应用
Applications of Spin-Dependent Generalized Squeezing in Hybrid Spin-Oscillator Quantum Processors
AI总结：
本文提出并研究混合自旋-振子量子处理器中自旋依赖广义压缩的4种应用，为该平台的高保真量子计算与传感奠定基础。
AI中文摘要：
广义压缩相互作用是量子光学的基础，近期已在混合自旋-振子量子处理器中实现实验控制[O. Băzăvan等人，《自然·物理》22卷，757页（2026）；S. Saner等人，《物理评论X》16卷，021049页（2026）]。这些相互作用为离散变量和连续变量量子信息处理开辟了新应用方向，本文提出并研究了其中4种应用：由作用于两个自旋和一个公共振子的自旋依赖广义压缩介导的几何相位门；由单独寻址的自旋依赖广义压缩介导的真实N体自旋相互作用；通过自旋读出实现的振子测温；以及通过自旋依赖广义压缩和电路中测量实现的高保真振子量子态制备。这些应用的共同特征是广义压缩相互作用诱导的几何相位，其非线性依赖于振子的福克占据数和广义压缩的相互作用阶数。本工作为混合自旋-振子平台中基于广义压缩的快速、高保真离散变量和连续变量量子计算与传感奠定了基础。
英文摘要：
Generalized squeezing interactions are foundational to quantum optics, and have recently come under experimental control in hybrid spin-oscillator quantum processors [O. Băzăvan, et al., Nat. Phys. 22, 757 (2026); S. Saner, et al., Phys. Rev. X 16, 021049 (2026)]. These interactions open the door for new applications in the processing of discrete- and continuous-variable quantum information, four of which we propose and investigate in this work: geometric phase gates mediated by spin-dependent generalized squeezing acting on two spins and a common oscillator; genuine N-body spin interactions mediated by individually addressed spin-dependent generalized squeezing; oscillator thermometry via spin readout; and the preparation of high-fidelity quantum states of the oscillator via spin-dependent generalized squeezing and mid-circuit measurement. A unifying feature of these applications is the geometric phase induced by generalized squeezing interactions, which is nonlinear in the Fock occupation of the oscillator and the interaction order of the generalized squeezing. This work provides a foundation for fast, high-fidelity discrete- and continuous-variable quantum computation and sensing in the hybrid spin-oscillator platform via generalized squeezing.
