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2016 | 129 | 1a | A-66-A-69
Article title

Type-I and Type-II Confinement in Quantum Dots: Excitonic Fine Structure

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We have theoretically studied type-I and type-II confinement in InAs quantum dots with GaAs_{1-y}Sb_y capping layer. The character of the confinement can be adjusted by the Sb content. We have found that upon the transition from type-I to type-II confinement the hole wave functions change the topology from a compact shape to a two-segment shape, resulting in the complex changes in the exciton fine structure splitting with zero values at narticular compositions. Additionally, a high exciton radiative recombination probability is preserved even in type-II. This allows to design strongly luminescent quantum dots with naturally low fine structure splitting, which could serve as sources of entangled photon pairs for quantum communication.
Physical description
  • Central European Institute of Technology, Brno University of Technology, Technická 10, 616 00 Brno, Czech Republic
  • Central European Institute of Technology, Masaryk University, Kamenice 753, 625 00 Brno, Czech Republic
  • Central European Institute of Technology, Brno University of Technology, Technická 10, 616 00 Brno, Czech Republic
  • Institute of Physical Engineering, Brno University of Technology, Technická 22, 616 69 Brno, Czech Republic
  • [1] O. Benson, C. Santori, M. Pelton, Y. Yamamoto, Phys. Rev. Lett. 84, 2513 (2000), doi: 10.1103/PhysRevLett.84.2513
  • [2] N. Akopian, N.H. Lindner, E. Poem, Y. Berlatzky, J. Avron, D. Gershoni, B.D. Gerardot, P.M. Petroff, Phys. Rev. Lett. 96, 130501 (2006), doi: 10.1103/PhysRevLett.96.130501
  • [3] T. Takagahara, Phys. Rev. B 62, 16840 (2000), doi: 10.1103/PhysRevB.62.16840
  • [4] M. Bayer, G. Ortner, O. Stern, A. Kuther, A.A. Gorbunov, A. Forchel, P. Hawrylak, S. Fafard, K. Hinzer, T.L. Reinecke, S.N. Walck, J.P. Reithmaier, F. Klopf, F. Schäfer, Phys. Rev. B 65, 195315 (2002), doi: 10.1103/PhysRevB.65.19531
  • [5] Y.H. Huo, V. Křápek, A. Rastelli, O.G. Schmidt, Phys. Rev. B 90, 041304 (2014), doi: 10.1103/PhysRevB.90.041304
  • [6] A. Schliwa, M. Winkelnkemper, A. Lochmann, E. Stock, D. Bimberg, Phys. Rev. B 80, 161307 (2009), doi: 10.1103/PhysRevB.80.161307
  • [7] R. Trotta, E. Zallo, C. Ortix, P. Atkinson, J.D. Plumhof, J. van den Brink, A. Rastelli, O.G. Schmidt, Phys. Rev. Lett. 109, 147401 (2012), doi: 10.1103/PhysRevLett.109.147401
  • [8] J.D. Plumhof, V. Křápek, F. Ding, K.D. Jöns, R. Hafenbrak, P. Klenovský, A. Herklotz, K. Dörr, P. Michler, A. Rastelli, O.G. Schmidt, Phys. Rev. B 83, 121302 (2011), doi: 10.1103/PhysRevB.83.121302
  • [9] J.D. Plumhof, R. Trotta, V. Křápek, E. Zallo, P. Atkinson, S. Kumar, A. Rastelli, O.G. Schmidt, Phys. Rev. B 87, 075311 (2013), doi: 10.1103/PhysRevB.87.075311
  • [10] H.Y. Liu, M.J. Steer, T.J. Badcock, D.J. Mowbray, M.S. Skolnick, F. Suarez, J.S. Ng, M. Hopkinson, J.P.R. David, J. Appl. Phys. 99, 046104 (2006), doi: 10.1063/1.2173188
  • [11] P. Klenovský, V. Křápek, D. Munzar, J. Humlíček, Appl. Phys. Lett. 97, 203107 (2010), doi: 10.1063/1.3517446
  • [12] J.M. Ulloa, J.M. Llorens, B. Alén, D.F. Reyes, D.L. Sales, D. González, A. Hierro, Appl. Phys. Lett. 101, 253112 (2012), doi: 10.1063/1.4773008
  • [13] O. Stier, M. Grundmann, D. Bimberg, Phys. Rev. B 59, 5688 (1999), doi: 10.1103/PhysRevB.59.5688
  • [14] S. Birner, T. Zibold, T. Andlauer, T. Kubis, M. Sabathil, A. Trellakis, P. Vogl, IEEE Trans. Electron Dev. 54, 2137 (2007), doi: 10.1109/TED.2007.902871
  • [15] R. Seguin, A. Schliwa, S. Rodt, K. Pötschke, U.W. Pohl, D. Bimberg, Phys. Rev. Lett. 95, 257402 (2005), doi: 10.1103/PhysRevLett.95.257402
  • [16] V. Křápek, P. Klenovský, T. Šikola, Phys. Rev. B 92, 195430 (2015), doi: 10.1103/PhysRevB.92.195430
  • [17] A. Hospodková, M. Zíková, J. Pangrác, J. Oswald, J. Kubištová, K. Kuldová, P. Hazdra, E. Hulicius, J. Phys. D Appl. Phys. 46, 095103 (2013), doi: 10.1088/0022-3727/46/9/095103
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