Nian Lei-Lei, Wang Tao, Zhang Zu-Quan, Wang Jian-Sheng, Lü Jing-Tao
School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, 430074 Wuhan, People's Republic of China.
Department of Physics, National University of Singapore, Singapore 117551, Republic of Singapore.
J Phys Chem Lett. 2020 Oct 15;11(20):8721-8726. doi: 10.1021/acs.jpclett.0c02586. Epub 2020 Sep 30.
The photon blockade induced by optical nonlinearity has been widely used to generate single-photon emission under optical driving in quantum optics. However, the same approach is difficult to achieve in electrically driven molecular junctions. Here we propose a scheme for tuning photon statistics via Fano-like interference effect in a system consisting of two molecules within one optical cavity. Under electrical pumping, a transition from photon bunching to antibunching takes place as a manifestation of the Fano-like interference. This effect persists even in the presence of the dipole-dipole interaction between molecules based on the parameters extracted from the experiments. Our proposal can be realized in current-carrying scanning tunneling microscope junctions.
光学非线性诱导的光子阻塞已在量子光学中被广泛用于在光驱动下产生单光子发射。然而，同样的方法在电驱动分子结中很难实现。在此，我们提出一种方案，通过在一个光学腔内由两个分子组成的系统中的类Fano干涉效应来调控光子统计。在电泵浦下，从光子聚束到反聚束的转变作为类Fano干涉的一种表现而发生。基于从实验中提取的参数，即使在分子间存在偶极-偶极相互作用的情况下，这种效应依然存在。我们的方案可以在载流扫描隧道显微镜结中实现。
