用腔增强光路实现可扩展量子计算，通过偏振编码逻辑比特
Cavity-Enhanced Collective Quantum Processing with Polarization-Encoded Qubits
- 用谐振腔内循环光子的偏振态编码逻辑比特，分离物理载体与计算自由度
- 在厘米级腔中实现接近1的受控相位门，无需极端非线性或苛刻稳定条件
- 适合构建可扩展的腔基量子处理器，为实验实现提供可行路径
我们提出一种腔增强的光学架构，用于集体量子处理，其中逻辑量子比特编码在循环腔模的偏振子空间中。物理载体与计算自由度明确分离：谐振腔束提供稳定的共振基底，而可编程的偏振变换实现单比特操作。在纠缠区域引入偏振选择性非线性相互作用，生成可调的受控相位门，实现通用门集。参数尺度分析表明，在厘米级腔中使用实验可实现的固态非线性介质即可获得接近1的条件相位，无需极端非线性系数、毫秒量级光子寿命或亚赫兹激光稳定。结果表明，共振循环为基于腔的集体量子架构提供了物理上可行的平台。
原文摘要 · Abstract (English)
We introduce a cavity-enhanced optical architecture for collective quantum processing in which logical qubits are encoded in the polarization subspace of recirculating intracavity modes. The physical carrier and computational degree of freedom are explicitly separated: harmonic cavity bundles provide a stable resonant substrate, while programmable polarization transformations implement single-qubit operations. A polarization-selective nonlinear interaction in the entanglement region generates tunable controlled-phase gates, enabling a universal gate set. A parameter-scaling analysis shows that order-unity conditional phases are attainable in centimeter-scale cavities using experimentally accessible solid-state nonlinear media, without requiring extreme nonlinear coefficients, millisecond photon lifetimes, or sub-hertz laser stabilization. The results indicate that resonant recirculation provides a physically plausible platform for cavity based collective quantum architectures.
Thank you to arXiv for use of its open access interoperability. PaperDance 不是 arXiv 官方产品；中文卡片由大模型生成，请以原文为准。