论文标题
可视化具有频率和时间分辨光谱的单个光子的发射
Visualizing the emission of a single photon with frequency and time resolved spectroscopy
论文作者
论文摘要
在量子物理学的曙光中，Wigner和Weisskopf获得了使用频率模式的基础（Weisskopf和Wigner，“ZeitschriftFürPhysik”的基础，获得了单个光子对单个光子发射的完整分析描述（A \ textit {Photon promon protait}）。对该肖像的直接实验重建需要准确测量时间分辨的荧光光谱，并具有对谐音频率的高灵敏度以及描述光子创建的超快动力学。在这项工作中，我们在超导波导量子电动力学（WQED）平台中证明了这种实验技术，使用单transmon值和两个耦合的transmon矩形作为量子发射器。在这两种情况下，光子肖像都与输入输出理论的预测定量一致，并与Wigner-Weisskopf理论一致。我们认为，我们的技术不仅允许有趣的基本原理可视化，而且可以作为工具，例如实现波导量子电动力学中的多维光谱。
At the dawn of Quantum Physics, Wigner and Weisskopf obtained a full analytical description (a \textit{photon portrait}) of the emission of a single photon by a two-level system, using the basis of frequency modes (Weisskopf and Wigner, "Zeitschrift für Physik", 63, 1930). A direct experimental reconstruction of this portrait demands an accurate measurement of a time resolved fluorescence spectrum, with high sensitivity to the off-resonant frequencies and ultrafast dynamics describing the photon creation. In this work we demonstrate such an experimental technique in a superconducting waveguide Quantum Electrodynamics (wQED) platform, using single transmon qubit and two coupled transmon qubits as quantum emitters. In both scenarios, the photon portraits agree quantitatively with the predictions of the input-output theory and qualitatively with Wigner-Weisskopf theory. We believe that our technique allows not only for interesting visualization of fundamental principles, but may serve as a tool, e.g. to realize multi-dimensional spectroscopy in waveguide Quantum Electrodynamics.
