用于量子存储器的双重相位光子回波方案中受控制拉比振荡的分析。

Analysis of Controlled Rabi Flopping in a Double Rephasing Photon Echo Scheme for Quantum Memories.

作者信息

Ullah Rahmat, Ham Byoung S

机构信息

Center for Photon Information Processing, and School of Electrical Engineering and Computer Science, Gwangju Institute of Science and Technology, Gwangju 61005, Korea.

Quantum Optics Lab., Department of Physics, COMSATS University, Islamabad 44000, Pakistan.

出版信息

Entropy (Basel). 2020 Sep 9;22(9):1007. doi: 10.3390/e22091007.

DOI:10.3390/e22091007

PMID:33286776

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7597080/

Abstract

A double rephasing scheme of a photon echo is analyzed for inversion-free photon echo-based quantum memories using controlled Rabi flopping, where the Rabi flopping is used for phase control of collective atom coherence. Unlike the rephasing-caused π-phase shift in a single rephasing scheme, the control Rabi flopping between the excited state and an auxiliary third state induces coherence inversion. Thus, the absorptive photon echo in a double rephasing scheme can be manipulated to be emissive. Here, we present a quantum coherence control of atom phases in a double rephasing photon echo scheme for emissive photon echoes for quantum memory applications.

摘要

针对基于受控制拉比振荡的无反转光子回波量子存储器，分析了一种光子回波的双重相位重聚方案，其中拉比振荡用于集体原子相干性的相位控制。与单重相位重聚方案中由相位重聚引起的π相移不同，激发态与辅助第三态之间的受控拉比振荡会导致相干性反转。因此，双重相位重聚方案中的吸收性光子回波可被操控为发射性的。在此，我们展示了一种用于量子存储器应用的发射性光子回波的双重相位重聚光子回波方案中原子相位的量子相干控制。