Direct observation of dynamic surface acoustic wave controlled carrier injection into single quantum posts using phase-resolved optical spectroscopy

A versatile stroboscopic technique based on active phase-locking of a surface acoustic wave to picosecond laser pulses is used to monitor dynamic acoustoelectric effects. Time-integrated multi-channel detection is applied to probe the modulation of the emission of a quantum well for different frequencies of the surface acoustic wave. For quantum posts we resolve dynamically controlled generation of neutral and charged excitons and preferential injection of holes into localized states within the nanostructure.

[1]  H. Gotoh,et al.  Photoluminescence dynamics in GaAs/AlAs quantum wells modulated by one-dimensional standing surface acoustic waves , 2009 .

[2]  Andrew J. Shields,et al.  Modulation of single quantum dot energy levels by a surface-acoustic-wave , 2008 .

[3]  L S Levitov,et al.  Quantized adiabatic charge transport in a carbon nanotube. , 2001, Physical review letters.

[4]  A. Wixforth,et al.  Acoustically Driven Storage of Light in a Quantum Well , 1997 .

[5]  Rudolf Hey,et al.  Photon anti-bunching in acoustically pumped quantum dots , 2009 .

[6]  A. Zrenner,et al.  Recent advances in exciton-based quantum information processing in quantum dot nanostructures , 2005 .

[7]  J. J. Finley,et al.  Manipulation of the spontaneous emission dynamics of quantum dots in two-dimensional photonic crystals , 2005 .

[8]  J. Riikonen,et al.  Cascaded exciton emission of an individual strain-induced quantum dot , 2009, 0908.1665.

[9]  Larry A. Coldren,et al.  High-quality factor optical microcavities using oxide apertured micropillars , 2005 .

[10]  Achim Wixforth,et al.  Charge Conveyance and Nonlinear Acoustoelectric Phenomena for Intense Surface Acoustic Waves on a Semiconductor Quantum Well , 1999 .

[11]  Y.Wu,et al.  Growth and optical properties of self-assembled InGaAs quantum posts , 2007, 0709.2392.

[12]  Dirk Reuter,et al.  Enhanced sequential carrier capture into individual quantum dots and quantum posts controlled by surface acoustic waves. , 2010, Nano letters.

[13]  A. Wixforth,et al.  Noninvasive probing of persistent conductivity in high quality ZnCdSe/ZnSe quantum wells using surface acoustic waves , 2010 .

[14]  G. Solomon,et al.  Resolved sideband emission of InAs/GaAs quantum dots strained by surface acoustic waves. , 2010, Physical review letters.

[15]  P. Petroff,et al.  Growth, structural, and optical properties of self-assembled (In,Ga)as quantum posts on GaAs. , 2007, Nano letters.

[16]  P. Santos,et al.  Transport and lifetime enhancement of photoexcited spins in GaAs by surface acoustic waves. , 2001, Physical review letters.

[17]  R. Nötzel,et al.  Surface-acoustic-wave-induced carrier transport in quantum wires , 2002 .

[18]  Pierre Petroff,et al.  Quantum posts with tailored structural, electronic and optical properties for optoelectronic and quantum electronic device applications , 2009 .

[19]  E. O’Reilly,et al.  Polarization Properties of Columnar Quantum Dots: Effects of Aspect Ratio and Compositional Contrast , 2010, IEEE Journal of Quantum Electronics.

[20]  M. M. de Lima,et al.  Modulation of photonic structures by surface acoustic waves , 2005 .

[21]  A. Fiore,et al.  Epitaxial growth of quantum rods with high aspect ratio and compositional contrast , 2008 .

[22]  Val Zwiller,et al.  Single electron charging in optically active nanowire quantum dots. , 2010, Nano letters.

[23]  P. Petroff,et al.  A semiconductor exciton memory cell based on a single quantum nanostructure. , 2008, Nano letters.

[24]  P. Santos,et al.  Dynamic carrier distribution in quantum wells modulated by surface acoustic waves , 2001 .