Electrically driven photon antibunching from a single molecule at room temperature

Maximilian Nothaft (), Steffen Höhla, Fedor Jelezko, Norbert Frühauf, Jens Pflaum and Jörg Wrachtrup
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Maximilian Nothaft: 3rd Physics Institute and Research Center SCoPE, University of Stuttgart
Steffen Höhla: Institute for Large Area Microelectronics and Research Center SCoPE, University of Stuttgart
Fedor Jelezko: Institute for Quantum Optics, University of Ulm
Norbert Frühauf: Institute for Large Area Microelectronics and Research Center SCoPE, University of Stuttgart
Jens Pflaum: Experimental Physics VI, University of Würzburg and ZAE Bayern
Jörg Wrachtrup: 3rd Physics Institute and Research Center SCoPE, University of Stuttgart

Nature Communications, 2012, vol. 3, issue 1, 1-6

Abstract: Abstract 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.

Date: 2012
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DOI: 10.1038/ncomms1637

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