Project C3:
Coherent control in coupled quantum dot systems (2005-2017)
Summary
The project aims in its final stage at the coherent control of electronic excitations in tailored III-V quantum dot (QD) systems and the understanding of the underlying many-body physics. We will investigate the coupling of the electronic levels and the dephasing processes in dependence of the scaling properties i.e., of the number of coupled QDs and QD spacing. Single QD molecules will be investigated by micro-photoluminescence (PL), micro-PL excitation spectroscopy, photon correlation spectroscopy, and coherent control experiments. Within the scope of the project the epitaxial growth process of low-density vertically and laterally coupled QDs needs to be developed for emission wavelengths between 700 to 1000 nm. This includes the fabrication of lateral QD molecules, using a combination of molecular beam epitaxy and atomic layer precise in situ etching.
Project leaders
Dr. Michael Jetter, Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart
Prof. Dr. Peter Michler, Institut für Halbleiteroptik und Funktionelle Grenzflächen, Universität Stuttgart
Prof. Dr. Oliver Schmidt, Institute for Integrative Nanosciences (IIN), IFW-Dresden
Refs & Publications
F. Hargart, K. Roy-Choudhury, T. John, S. L. Portalupi, C. Schneider, S. Höfling, M. Kamp, S. Hughes, and P. Michler"Probing different regimes of strong field light–matter interaction with semiconductor quantum dots and few cavity photons"
New Journal of Physics 18, 123031 (2016); doi: 10.1088/1367-2630/aa5198
F. Hargart, M. Müller, K. Roy-Choudhury, S. L. Portalupi, C. Schneider, S. Höfling, M. Kamp, S. Hughes, and P. Michler
"Cavity-enhanced simultaneous dressing of quantum dot exciton and biexciton states"
PHYSICAL REVIEW B 93, 115308 (2016); doi: 10.1103/PhysRevB.93.115308
H. Niederbracht, F. Hargart, M. Schwartz, E. Koroknay, C. A. Kessler, M. Jetter, and P. Michler
"Fabrication and optical characterization of large scale membrane containing InP/AlGaInP quantum dots"
Nanotechnology, 26 , 235201 (2015)
M. Witzany, T.-L. Liu, J.-B. Shim, F. Hargart, E. Koroknay, W.-M. Schulz, M. Jetter, E. Hu, J. Wiersig, and P. Michler
"Strong mode coupling in InP quantum dot-based GaInP microdisk cavity dimers"
New J. Phys. 15, 013060 (2013); doi: 10.1088/1367-2630/15/1/013060
D. Bothner, C. Clauss, E. Koroknay, M. Kemmler, T. Gaber, M. Jetter, M. Scheffler, P. Michler, M. Dressel, D. Kölle, and R. Kleiner
"The phase boundary of superconducting niobium thin films with antidot arrays fabricated with microsphere photolithography"
Supercond. Sci. Technol. 25, 065020 (2012); doi: 10.1088/0953-2048/25/6/065020
C. Hermannstädter, M. Witzany, M. Heldmaier, R. Hafenbrak, K. D. Jöns, G. J. Beirne, and P. Michler
"Polarization anisotropic luminescence of tunable single lateral quantum dot molecules"
J. Appl. Phys. 111, 063526 (2012); doi: 10.1063/1.3697982
C. A. Kessler, M. Reischle, R. Roßbach, E. Koroknay, M. Jetter, H. Schweizer, and P. Michler
"Optical investigations on single vertically coupled InP/GaInP quantum dot pairs"
Phys. Stat. Sol. (b) 249, 747 (2012); doi: 10.1002/pssb.201200004
E. Koroknay, W.-M. Schulz, D. Richter, U. Rengstl, M. Reischle, M. Bommer, C. Kessler, R. Roßbach, H. Schweizer, M. Jetter, and P. Michler
"Vertically stacked and laterally ordered InP and In(Ga)As quantum dots for quantum gate applications"
Phys. Stat. Sol. (b) 249, 737 (2012); doi: 10.1002/pssb.201100814
M. Heldmaier, M. Seible, C. Hermannstädter, M. Witzany, R. Roßbach, M. Jetter, P. Michler, L. Wang, A. Rastelli, and O. G. Schmidt
"Excited-state spectroscopy of single lateral self-assembled InGaAs quantum dot molecules"
Phys. Rev. B 85, 115304 (2012); doi: 10.1103/PhysRevB.85.115304
M. Heldmaier, C. Hermannstädter, M. Witzany, L. Wang, J. Peng, A. Rastelli, G. Bester, O. G. Schmidt, and P. Michler
"Growth and spectroscopy of single lateral InGaAs/GaAs quantum dot molecules"
Phys. Stat. Soli. B 249, No. 4, 710–720 (2012); doi: 10.1002/pssb.201100800
D. Bothner, C. Clauss, E. Koroknay, M. Kemmler, T. Gaber, M. Jetter, M. Scheffler, P. Michler, M. Dressel, D. Kölle, and R. Kleiner
"Reducing vortex losses in superconducting microwave resonators with microsphere patterned antidot arrays"
Appl. Phys. Lett. 100, 012601 (2012); doi: 10.1063/1.3673869
M. Eichfelder, W.-M. Schulz, M. Reischle, M. Wiesner, R. Roßbach, M. Jetter, and P. Michler
"Growth and characterization of electrically pumped red-emitting VCSEL with embedded InP/AlGaInP quantum dots"
J. Crystal Growth 315, 131 (2011); doi: 10.1016/j.jcrysgro.2010.09.073
E. Koroknay, W. Schulz, M. Eichfelder, R. Roßbach, M. Jetter, and P. Michler
"InP quantum dots for applications in laser devices and future solid-state quantum gates"
J. Phys.: Conf. Ser. 245, 012077 (2010); doi: 10.1088/1742-6596/245/1/012077
W.-M. Schulz, M. Eichfelder, M. Reischle, C. Kessler, R. Roßbach, M. Jetter, and P. Michler
"Pulsed single-photon resonant-cavity quantum dot LED"
J. Crystal Growth 315, 127 (2011); doi: 10.1016/j.jcrysgro.2010.08.014
C. Hermannstädter, G. J. Beirne, M. Witzany, M. Heldmaier, J. Peng, G. Bester, L. Wang, A. Rastelli, O. G. Schmidt, and P. Michler
"Influence of the charge carrier tunneling processes on the recombination dynamics in single lateral quantum dot molecules"
Phys. Rev. B 82, 085309 (2010); doi: 10.1103/PhysRevB.82.085309
W.-M. Schulz, M. Eichfelder, R. Roßbach, M. Jetter, and P. Michler
"InP/AlGaInP quantum dot laser emitting at 638 nm"
J. Crystal Growth 315, 123 (2011); doi: 10.1016/j.jcrysgro.2010.07.018
W. Schulz, T. Thomay, M. Eichfelder, M. Bommer, M. Wiesner, R. Roßbach, M. Jetter, R. Bratschitsch, A. Leitenstorfer, and P. Michler
"Optical properties of red emitting self-assembled InP/(Al0.20Ga0.80)0.51In0.49P quantum dot based micropillars"
Opt. Express 18, 12543-12551 (2010); doi: 10.1364/OE.18.012543
J. Peng, C. Hermannstädter, M. Witzany, M. Heldmaier, L. Wang, S. Kiravittaya, A. Rastelli, O. G. Schmidt, P. Michler, and G. Bester
"Heterogeneous confinement in laterally coupled InGaAs/GaAs quantum dot molecules under lateral electric fields"
Phys. Rev. B 81, 205315 (2010)
D. Richter, R. Hafenbrak, K. D. Jöns, W.-M. Schulz, M. Eichfelder, M. Heldmaier, R. Roßbach, M. Jetter, and P. Michler
"Low-density MOVPE grown InGaAs QDs exhibiting ultra-narrow single exciton linewidths"
Nanotechnology 21, 125606 (2010); doi: 10.1088/0957-4484/21/12/125606
M. Bommer, W.-M. Schulz, T. Thomay, M. Tomas, R. Roßbach, M. Jetter, A. Leitenstorfer, R. Bratschitsch, and P. Michler
"InP quantum dots in pillar microcavities - mode spectra and single-photon emission"
J. Phys. Conf. Ser. 210, 012010 (2010) ; doi: 10.1088/1742-6596/210/1/012010
W.-M. Schulz, M. Eichfelder, R. Roßbach, M. Jetter, and P. Michler
"Low Threshold InP/AlGaInP Quantum Dot In-Plane Laser Emitting at 638 nm"
Appl. Phys. Express 2, 112501 (2009); doi: 10.1143/APEX.2.112501
M. Eichfelder, W.-M. Schulz, M. Reischle, M. Wiesner, R. Roßbach, M. Jetter, and P. Michler
"Room-temperature lasing of electrically pumped red-emitting InP/(Al0.20Ga0.80)0.51In0.49P quantum dots embedded in a vertical microcavity"
Appl. Phys. Lett. 95, 131107 (2009); doi: 10.1063/1.3236752
C. Hermannstädter, M. Witzany, G. J. Beirne, W.-M. Schulz, M. Eichfelder, R. Rossbach, M. Jetter, L. Wang, A. Rastelli, O. G. Schmidt, and P. Michler
"Polarization fine-structure and enhanced single-photon emission of selfassembled lateral InGaAs quantum dot molecules embedded in a planar microcavity"
J. Appl. Phys. 105, 122408 (2009)
W.-M. Schulz, R. Roßbach, M. Reischle, G. J. Beirne, M. Bommer, M. Jetter, and P. Michler
"Optical and structural properties of InP quantum dots embedded in (Al_/x/ Ga_1−/x/ )_0.51 In_0.49 P"
Phys. Rev. B 79, 035329 (2009)
W.M. Schulz, R. Rossbach, M. Reischle, G. J. Beirne, M. Jetter, and P. Michler
"InP-quantum dots in Al_{0.20}Ga_{0.80}InP with different barrier configurations"
Phys. Stat. Sol. C 6, No. 4, 906-909 (2009); doi: 10.1002/pssc.200880599
R. Roßbach, W.-M. Schulz, M. Reischle, G.J. Beirne, C. Hermannstädter, M. Jetter, and P. Michler
"Growth of red InP/GaInP quantum dots on a low density InAs/GaAs island seed layer by MOVPE"
Journal of Crystal Growth 310, 23, 5089 (2008); doi: 10.1016/j.jcrysgro.2008.07.084
G. J. Beirne, M. Jetter, and P. Michler
"Quantum optical studies of single coupled quantum dot pairs"
In: O. Benson, F. Henneberger (Ed.), Semiconductor Quantum Bits, Pan Stanford Publishing Pte. Ltd. (Publ. Date 31. Juli 2008)
L. Wang, A. Rastelli, S. Kiravittaya, P. Atkinson, F. Ding, C. C. Bof Bufon, C. Hermannstädter, M. Witzany, G. J. Beirne, P. Michler, and O. G. Schmidt
"Towards deterministically controlled InGaAs/GaAs lateral quantum dot molecules"
New J. Phys. 10, 043031 (2008)
M.Reischle, G.J.Beirne, R.Roßbach, M.Jetter , H.Schweizer, and P.Michler
"Non-resonant tunneling in single pairs of vertically stacked asymmetric InP/GaInP quantum dots"
Physica E: Low-dimensional Systems and Nanostructures 40, 6, 1958 (2008)
M. Reischle, G. J. Beirne, R. Roßbach, M. Jetter, H. Schweizer, and P. Michler
"Nonresonant tunneling in single asymmetric pairs of vertically stacked InP quantum dots"
Phys. Rev. B 76, 085338 (2007)
G. J. Beirne, M. Reischle, R. Roßbach, W.-M. Schulz, M. Jetter, J. Seebeck, P. Gartner, C. Gies, F. Jahnke, and P. Michler
"Electronic shell structure and carrier dynamics of high aspect ratio InP single quantum dots"
Phys. Rev. B 75, 195302 (2007); doi: 10.1103/PhysRevB.75.195302
C. Hermannstädter, G. J. Beirne, L. Wang, A. Rastelli, O. G. Schmidt, and P. Michler
"Time-resolved optical spectroscopy of tunnel coupled lateral quantum dot molecules"
AIP Conf. Proc., Volume 893, pp. 875-876 (2007)
G. J. Beirne, C. Hermannstädter, L. Wang, A. Rastelli, E. Müller, O. G. Schmidt, and P. Michler
"Tunable lateral tunnel coupling between two self-assembled InGaAs quantum dots"
Proc. SPIE, Vol. 6471, 647104 (2007)
R. Roßbach, M. Reischle, G. J. Beirne, H. Schweizer, M. Jetter, and P. Michler
"Vertical asymmetric double Quantum Dots"
Journal of Crystal Growth 298, 603 (2007)
L. Wang, A. Rastelli, and O. G. Schmidt
"Structural and optical properties of In(Ga)As/GaAs quantum dots treated by partial capping and annealing"
J. Appl. Phys. 100, 064313 (2006)
L. Wang, A. Rastelli, S. Kiravittaya, R. Songmuang, O. G. Schmidt, B. Krause, and T. H. Metzger
"Guided self-assembly of lateral InAs/GaAs quantum-dot molecules for single molecule spectroscopy"
Nanoscale Res. Lett. 1, 74 (2006)
G. J. Beirne, C. Hermannstädter, L. Wang, A. Rastelli, O. G. Schmidt, and P. Michler
"Quantum Light Emission of two lateral tunnel-coupled (In,Ga)As/GaAs Quantum Dots controlled by a tunable static electric Field"
Phys. Rev. Lett. 96, 137401 (2006)