Temperature dependent single photon emission in InP/GaInP quantum dots |
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| Institution: | 1. Departamento de Física de Materiales, Universidad Autónoma de Madrid, E-28049 Madrid, Spain;2. Instituto de Microelectrónica de Madrid, Centro Nacional de Microelectrónica, Consejo Superior de Investigaciones Científicas, Isaac Newton 8, PTM Tres Cantos, E-28760 Madrid, Spain;3. Department of Physics and Astronomy, University of Sheffield, S3 7RH Sheffield, UK;1. Institute of High Pressure Physics, “Unipress” Sokolowska 29/37, 01-142 Warsaw, Poland;2. TopGaN Limited, Sokolowska 29/37, 01-142 Warsaw, Poland;4. Department of Physics, School of Basic Sciences, Faculty of Science, Manipal University Jaipur, Jaipur 303007, Rajasthan, India;1. Department of Electronics and Radio Engineering, Kyung Hee University, 1732 Deogyeong-daero, Giheung-gu, Yongin, 17104, South Korea;2. Optowell Co., Ltd., 109 Ballyong-ro, Deokjin-gu, Jeonju, 54853, South Korea;3. Korea Photonics Technology Institute, Laser-IT Research Center, 9 Cheomdan Bencheo-ro 108, Buk-gu, Gwangju, 61007, South Korea;1. Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000, Aarhus C, Denmark;2. Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, DK-8000, Aarhus C, Denmark;3. Department of Engineering, Aarhus University, Inge Lehmanns Gade 10, DK-8000 Aarhus C, Denmark;4. Department of Mechanical Engineering, Technical University of Denmark, Nils Koppels Alle, 404, DK-2800, Lyngby, Denmark;5. SDU NanoSYD, Mads Clausen Institute, University of Southern Denmark, Alsion 2, 6400, Sønderborg, Denmark |
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| Abstract: | Intensity correlation measurements on single InP/GaInP quantum dots (QDs) show antibunching at zero delay time, indicative of single photon emission. The antibunching time τR increases or decreases with temperature depending on the QD size as a result of the competition between: (1) thermal excitation of holes dominant in smaller QDs and (2) dark-to-bright exciton transition dominant in larger QDs. The antibunching minimum g(2)(0) remains below 0.2 up to 45 K. |
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