一个分子在失去相干性之前能散射多少光子？

中文摘要 AI 辅助

保存在保守光阱中的分子量子比特在散射来自捕获激光的光子时可能失去相干性。该过程的速率由两部分组成，一部分等于两个量子比特态的平均拉曼散射速率，另一部分与它们的瑞利散射振幅之差的平方成正比。本文计算了退相干速率，并将结果用分子极化率的矢量部分和张量部分 $\alpha_1$ 和 $\alpha_2$ 表示。虽然分子的退相干速率通常远大于原子，但在 $\alpha_1$ 和 $\alpha_2$ 都较小的波长处，退相干被抑制。本文确定了 CaF 分子出现这种情况的波长。

英文摘要

Molecular qubits held in conservative optical traps may lose coherence when they scatter photons from the trapping lasers. The rate for this process has two parts, one equal to the mean Raman scattering rate of the two qubit states, and the other proportional to the square of the difference in their Rayleigh scattering amplitudes. This paper calculates the decoherence rate, expressing results in terms of the vector and tensor parts of the molecular polarizability, $α_1$ and $α_2$. While the decoherence rate is generally much larger for molecules than for atoms, it is suppressed at wavelengths where $α_1$ and $α_2$ are both small. The wavelengths where this occurs are identified for CaF molecules.

发表机构

• Imperial College London（帝国理工学院）

机构由 AI 辅助整理，请以论文原文为准。