发表机构
Instituto de Física, Universidade de São Paulo; Institut für Physik, Humboldt-Universität zu Berlin（圣保罗大学物理研究所; 柏林洪堡大学物理研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究光子 - 声子耦合对氮化硅微腔作为量子源的有害影响，通过研究微腔噪声与温度的关系，证明其与光子芯片和热库耦合有关，控制该噪声源是量子网络中纠缠态源高效实现的必要条件。
AI 中文摘要
在量子系统中，与环境的接触对状态纯度有害，限制了量子信息应用中纠缠源的实际使用。这种纯度损失以状态层析成像中的额外噪声形式出现。我们研究了曾用于量子态生成的氮化硅微腔中这种噪声依赖性，证明该噪声对温度的依赖性与光子芯片与热库的耦合相符。控制此噪声源是这些器件在量子网络中作为纠缠态源高效实现的必要条件。
英文摘要
In quantum systems, the contact with the environment is detrimental to the purity of the state, thus limiting the practical use of entangled sources in quantum information applications. This loss of purity is observed in the form of additional noise in the tomography of the state. We investigate this noise dependence in $Si_3N_4$ micro-cavities, previously used for quantum state generation, and demonstrate that the dependence of this noise on the temperature is compatible with a coupling of the photonic chips to a thermal reservoir. The control of this noise source is a necessary condition for the efficient implementation of these devices as sources of entangled states in quantum networks.
