AI 中文总结
本研究提出一种利用强耦合量子点-腔系统生成有限能量qunaught态的协议，结合压缩猫态生成、猫繁殖与零差测量，可提升成功率，与集成光子学兼容，为可扩展CV量子计算提供新路径。
AI 中文摘要
GKP态可实现容错连续变量（CV）量子计算，但由于其高度非高斯且理想结构具有无限能量，实验上生成GKP态仍具挑战性。本研究提出一种现实且可扩展的协议，利用强耦合量子点-腔系统中生成的薛定谔猫态生成有限能量资源态，具体为qunaught态。该方案结合确定性压缩猫态生成、猫繁殖协议及零差测量。通过数值模拟，分析量子点-腔系统各参数在生成实用qunaught态中的作用，量化这些态的保真度与生成概率间的权衡，并指出接受一组结构化零差测量结果可显著提升整体成功率。所提方法与集成光子学及电信波长兼容，为可扩展CV量子信息处理提供了有前景的途径。
英文摘要
GKP states enable fault-tolerant CV quantum computation, but their generation remains experimentally challenging due to their highly non-Gaussian and infinite-energy ideal structure. In this work, we present a realistic and scalable protocol for generating finite-energy resource states, specifically the qunaught state, using Schrodinger cat states generated in a strongly coupled quantum dot-cavity system. Our scheme combines deterministic squeezed cat-state generation, cat-breeding protocols, and homodyne measurements. Using numerical simulations, we analyze the role of various parameters of the quantum dot-cavity system in the generation of practical qunaught states. Furthermore, we quantify the trade-off between the fidelity and generation probability of these states and exploit the fact that accepting a structured set of homodyne outcomes can significantly enhance the overall success rate. The proposed approach is compatible with integrated photonics and telecom wavelengths, offering a promising route toward scalable CV quantum information processing.
