Vasenin A V, Kadyrmetov Sh V, Bolgar A N, Dmitriev A Yu, Astafiev O V
Laboratory of Artificial Quantum Systems, <a href="https://ror.org/00v0z9322">Moscow Institute of Physics and Technology</a>, 141701 Dolgoprudny, Russia.
<a href="https://ror.org/03f9nc143">Skolkovo Institute of Science and Technology</a>, Nobel Street 3, 143026 Moscow, Russia.
Phys Rev Lett. 2024 Aug 16;133(7):073602. doi: 10.1103/PhysRevLett.133.073602.
An electromagnetic wave propagating through a waveguide with a strongly coupled two-level superconducting artificial atom exhibits an evolving superposition with the atom. The Rabi oscillations in the atom result from a single excitation-relaxation, corresponding to photon absorption and stimulated emission from and to the field. In this study, we experimentally investigated the time-dependent behavior of the field transmitted through a waveguide with a strongly coupled transmon. The scattered fields agree well with the predictions of the input-output theory. We demonstrate that the time evolution of the propagating fields, because of the interaction, encapsulates all information about the atom. Furthermore, we deduced the dynamics of the incoherent radiation component from the first-order correlation function of the measured field.
通过具有强耦合二能级超导人工原子的波导传播的电磁波，与该原子呈现出不断演化的叠加态。原子中的拉比振荡源于单一的激发 - 弛豫过程，这对应于光子与场之间的吸收和受激发射。在本研究中，我们通过实验研究了通过具有强耦合跨导量子比特的波导传输的场的时间相关行为。散射场与输入 - 输出理论的预测吻合良好。我们证明，由于相互作用，传播场的时间演化包含了有关原子的所有信息。此外，我们从测量场的一阶关联函数推导出了非相干辐射分量的动力学。
