Bienias Przemyslaw, Douglas James, Paris-Mandoki Asaf, Titum Paraj, Mirgorodskiy Ivan, Tresp Christoph, Zeuthen Emil, Gullans Michael J, Manzoni Marco, Hofferberth Sebastian, Chang Darrick, Gorshkov Alexey V
Joint Quantum Institute, National Institute of Standards and Technology and the University of Maryland, College Park, Maryland 20742, USA.
Joint Center for Quantum Information and Computer Science, National Institute of Standards and Technology and the University of Maryland, College Park, Maryland 20742, USA.
Phys Rev Res. 2020;2(3). doi: 10.1103/physrevresearch.2.033049.
We study the dissipative propagation of quantized light in interacting Rydberg media under the conditions of electromagnetically induced transparency. Rydberg blockade physics in optically dense atomic media leads to strong dissipative interactions between single photons. The regime of high incoming photon flux constitutes a challenging many-body dissipative problem. We experimentally study in detail the pulse shapes and the second-order correlation function of the outgoing field and compare our data with simulations based on two novel theoretical approaches well-suited to treat this many-photon limit. At low incoming flux, we report good agreement between both theories and the experiment. For higher input flux, the intensity of the outgoing light is lower than that obtained from theoretical predictions. We explain this discrepancy using a simple phenomenological model taking into account pollutants, which are nearly stationary Rydberg excitations coming from the reabsorption of scattered probe photons. At high incoming photon rates, the blockade physics results in unconventional shapes of measured correlation functions.
我们研究了在电磁诱导透明条件下，量子化光在相互作用的里德堡介质中的耗散传播。光学致密原子介质中的里德堡阻塞物理导致单光子之间存在强耗散相互作用。高入射光子通量的情况构成了一个具有挑战性的多体耗散问题。我们详细实验研究了出射场的脉冲形状和二阶关联函数，并将我们的数据与基于两种适用于处理这种多光子极限的新颖理论方法的模拟结果进行比较。在低入射通量下，我们报告两种理论与实验之间具有良好的一致性。对于更高的输入通量，出射光的强度低于从理论预测获得的强度。我们使用一个简单的唯象模型来解释这种差异，该模型考虑了污染物，这些污染物是来自散射探测光子再吸收的近乎静止的里德堡激发。在高入射光子速率下，阻塞物理导致测量的关联函数呈现非常规形状。
