Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.
Phys Rev Lett. 2019 Sep 27;123(13):133602. doi: 10.1103/PhysRevLett.123.133602.
Thorough control of the optical mode of a single photon is essential for quantum information applications. We present a comprehensive experimental and theoretical study of a light-matter interface based on cavity quantum electrodynamics. We identify key parameters like the phases of the involved light fields and demonstrate absolute, flexible, and accurate control of the time-dependent complex-valued wave function of a single photon over several orders of magnitude. This capability will be an important tool for the development of distributed quantum systems with multiple components that interact via photons.
对单光子光学模式的彻底控制对于量子信息应用至关重要。我们基于腔量子电动力学展示了一个基于光物质界面的全面实验和理论研究。我们确定了关键参数，如所涉及的光场的相位，并展示了对单光子的时变复值波函数的绝对、灵活和精确控制，其量级跨越了几个数量级。这种能力将是开发通过光子相互作用的具有多个组件的分布式量子系统的重要工具。
