High-Purity Single Photons from Room-Temperature Quantum Dots
Chun-Yuan Cheng1*, Shih-Wen Feng1, Chen-Yeh Wei1, Jen-Hung Yang1, Yen-Ru Chen1, Ya-Wen Chuang2, Yang-Hsiung Fan3, Chih-Sung Chuu1
1Department of Physics, National Tsing Hua University, Hsinchu, Taiwan
2Department of Physics, Pennsylvania State University, Pennsylvania, USA
3Ezconn Corporation, Taipei, Taiwan
* Presenter:Chun-Yuan Cheng, email:pbpavc@gmail.com
Single photon emitters are indispensable to photonic quantum technologies. Here, we demonstrate the purification of single photons from room-temperature colloidal quantum dots by controlling their waveforms. With this method, the single photons maintain the high purity even at high excitation power, thereby allowing the single photon emission rate to increase without compromising the single-photon quality.

Keywords: single photon source, quantum dot