论文标题
部分可观测时空混沌系统的无模型预测
Unconditional remote entanglement using second-harmonic generation and twin two-mode squeezed vacuum states
论文作者
论文摘要
我们提出了一种基于光子学的连续变量（CV）形式的远程纠缠形式，利用严格的二阶非线性光学相互作用，不需要实施状态项目测量测量（即，远程纠缠而无需条件）。该方案利用了两个单独的下转换器，其中相应的非线性晶体是由参数近似规定的强大经典场驱动的，以及一个非排定第二次谐波生成（SHG）的完全量子机械模型，其进化的进化是由三线性的the the the the the form $ \ hat $ \ fext = sh sh} sh fext { i \hbarκ\ big（\ hat {a} \ hat {b} \ hat {c}^{\ dagger} - \ hat {a}^{\ dagger} \ hat {b}通过使用两个下接种者的信号模式驱动SHG过程，我们显示了生成的第二谐波模式（SH模式）与非相互作用的联合IDLER子系统之间的纠缠形成，而无需在相互作用模式上进行任何状态还原的测量。
We propose a photonics-based, continuous-variable (CV) form of remote entanglement utilizing strictly second-order nonlinear optical interactions that does not require the implementation of a state-projective measurement (i.e. remote entanglement without conditioning). This scheme makes use of two separate down-converters, wherein the corresponding nonlinear crystals are driven by strong classical fields as prescribed by the parametric approximation, as well as a fully quantum mechanical model of nondegenerate second harmonic generation (SHG) whose evolution is described by the trilinear Hamiltonian of the form $\hat{H}_{\text{shg}} = i\hbarκ\big(\hat{a}\hat{b}\hat{c}^{\dagger} - \hat{a}^{\dagger}\hat{b}^{\dagger}\hat{c}\big)$. By driving the SHG process with the signal modes of the two down-converters, we show entanglement formation between the generated second-harmonic mode (SH-mode) and the non-interacting joint-idler subsystem without the need for any state-reductive measurements on the interacting modes.
