Electrically driven photon antibunching from a single molecule at room temperature
Electrically driven photon antibunching from a single molecule at room temperature
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DOI：
10.1038/ncomms1637
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发表时间：
2012-01-01
影响因子：
16.6
通讯作者：
Wrachtrup, Joerg
中科院分区：
文献类型：
--
作者：
Nothaft, Maximilian;Hoehla, Steffen;Wrachtrup, Joerg
单光子发射体在量子信息处理、量子密码学和计量学中有着广泛的应用。为了集成和提供一个电子光子接口，它是非常感兴趣的电激发激发单光子发射所证明的量子点。由于激子结合能较低，在室温下电驱动量子点的亚泊松光子统计至今还不可能被探测到。然而，有机分子具有激子结合能的顺序为1 eV，从而促进电驱动的单光子源在室温下在固态矩阵的发展。在这里，我们演示了单个电驱动分子在室温下的电致发光。通过精心选择的分子发射体，以及一个专门设计的有机发光二极管结构的制造，我们能够实现稳定的单分子发射和检测亚泊松光子统计。
Single-photon emitters have been considered for applications in quantum information processing, quantum cryptography and metrology. For the sake of integration and to provide an electron photon interface, it is of great interest to stimulate single-photon emission by electrical excitation as demonstrated for quantum dots. Because of low exciton binding energies, it has so far not been possible to detect sub-Poissonian photon statistics of electrically driven quantum dots at room temperature. However, organic molecules possess exciton binding energies on the order of 1 eV, thereby facilitating the development of an electrically driven single-photon source at room temperature in a solid-state matrix. Here we demonstrate electroluminescence of single, electrically driven molecules at room temperature. By careful choice of the molecular emitter, as well as fabrication of a specially designed organic light-emitting diode structure, we were able to achieve stable single-molecule emission and detect sub-Poissonian photon statistics.