Direct Measurement of Quantum Dot Spin Dynamics using Time-Resolved Resonance Fluorescence (2009)
Zhao, Y., Vamivakas, A. N., Matthiesen, C., Fält, S., Badolato, A., ...
We temporally resolve the resonance fluorescence from an electron spin confined to a single self-assembled quantum dot to measure directly the spin's optical initialization and natural relaxation...
Latta, C., Högele, A., Zhao, Y., Vamivakas, A. N., Maletinsky, P., Kroner, M., ...
Resonant laser scattering along with photon correlation measurements have established the atom-like character of quantum dots. Here, we present measurements which challenge this identification for a...
Tunable Raman Photons from a Single Quantum Dot (2009)
Fernandez, G., Volz, T., Desbuquois, R., Badolato, A., Imamoglu, A.
We report the observation of all-optically tunable Raman fluorescence from a single quantum dot. The Raman photons are produced in an optically-driven Lambda-system defined by subjecting the single...
Polarization memory in single Quantum Dots (2009)
Poem, E., Khatsevich, S., Benny, Y., Marderfeld, I., Badolato, A., Petroff, P. M., ...
We measured the polarization memory of excitonic and biexcitonic optical transitions from single quantum dots at either positive, negative or neutral charge states. Positive, negative and no circular...
Dressed excitonic states and quantum interference in a three-level quantum dot ladder system (2008)
Gerardot, B. D., Brunner, D., Dalgarno, P. A., Karrai, K., Badolato, A., Petroff, P. M., ...
We observe dressed states and quantum interference effects in a strongly driven three-level quantum dot ladder system. The effect of a strong coupling field on one dipole transition is measured by a...
Dalgarno, P. A., Smith, J. M., McFarlane, J., Gerardot, B. D., Karrai, K., Badolato, A., ...
We present results on the charge dependence of the radiative recombination lifetime, Tau, and the emission energy of excitons confined to single self-assembled InGaAs quantum dots. There are...
Strong extinction of a far-field laser beam by a single quantum dot (2007)
Vamivakas, A. N., Atature, M., Dreiser, J., Yilmaz, S. T., Badolato, A., Swan, A. K., ...
Through the utilization of index-matched GaAs immersion lens techniques we demonstrate a record extinction (12%) of a far-field focused laser by a single InAs/GaAs quantum dot. This contrast level...
Polarization sensitive spectroscopy of charged Quantum Dots (2007)
Poem, E., Shemesh, J., Marderfeld, I., Galushko, D., Akopian, N., Gershoni, D., ...
We present an experimental and theoretical study of the polarized photoluminescence spectrum of single semiconductor quantum dots in various charge states. We compare our high resolution polarization...
Dynamics of Quantum Dot Nuclear Spin Polarization Controlled by a Single Electron (2007)
Maletinsky, P., Badolato, A., Imamoglu, A.
We present an experimental study of the dynamics underlying the buildup and decay of dynamical nuclear spin polarization in a single semiconductor quantum dot. Our experiment shows that the nuclei...
Contrast in transmission spectroscopy of a single quantum dot (2007)
Gerardot, B. D., Seidl, S., Dalgarno, P. A., Kroner, M., Karrai, K., Badolato, A., ...
We perform transmission spectroscopy on single quantum dots and examine the effects of a resident carriers spin, the incident laser spot size, polarization, and power on the experimental contrast. We...
Manipulating exciton fine structure in quantum dots with a lateral electric field (2007)
Gerardot, B.D., Seidl, S., Dalgarno, P.A., Warburton, R.J., Granados, Daniel, García, J.M., ...
The fine structure of the neutral exciton in a single self-assembled InGaAs quantum dot is investigated under the effect of a lateral electric field. Stark shifts up to 1.5 meV, an increase in...
Quantum nature of a strongly-coupled single quantum dot-cavity system (2006)
Hennessy, K., Badolato, A., Winger, M., Gerace, D., Atature, M., Gulde, S., ...
Cavity quantum electrodynamics (QED) studies the interaction between a quantum emitter and a single radiation-field mode. When an atom is in strong coupling with a cavity mode1,2, it is possible to...
Nonlinear dynamics of quantum dot nuclear spins (2006)
Maletinsky, P., Lai, C. W., Badolato, A., Imamoglu, A.
We report manifestly nonlinear dependence of quantum dot nuclear spin polarization on applied magnetic fields. Resonant absorption and emission of circularly polarized radiation pumps the resident...
Manipulating exciton fine-structure in quantum dots with a lateral electric field (2006)
Gerardot, B. D., Seidl, S., Dalgarno, P. A., Warburton, R. J., Granados, D., Garcia, J. M., ...
The fine structure of the neutral exciton in a single self assembled InGaAs quantum dot is investigated under the effect of a lateral electric field. Stark shifts up to 1.5 meV, an increase in...
Knight Field Enabled Nuclear Spin Polarization in Single Quantum Dots (2005)
Lai, C. W., Maletinsky, P., Badolato, A., Imamoglu, A.
We demonstrate dynamical nuclear spin polarization in the absence of an external magnetic field, by resonant circularly polarized optical excitation of a single electron or hole charged quantum dot....
Self-tuned quantum dot gain in photonic crystal lasers (2005)
Strauf, S., Hennessy, K., Rakher, M. T., Badolato, A., Andreani, L. C., ...
We demonstrate that very few (1 to 3) quantum dots as a gain medium are sufficient to realize a photonic crystal laser based on a high-quality nanocavity. Photon correlation measurements show a...
Absorptive and dispersive optical responses of excitons in a single quantum dot (2005)
Alén, B., Högele, A., Kroner, M., Seidl, S., Karrai, K., Warburton, R. J., ...
We have determined both the real and imaginary parts of the dielectric polarizability of a single quantum dot. The experiment is based on the observation and the manipulation of Rayleigh scattering...
Giant optical anisotropy in a single InAs quantum dot in a very dilute quantum-dot ensemble (2004)
Favero, Ivan, Cassabois, Guillaume, Jankovic, Aleksander, Ferreira, Robson, Darson, David, Voisin, Christophe, ...
We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge...
Giant optical anisotropy in a single InAs quantum dot in a very dilute quantum-dot ensemble (2004)
Favero, Ivan, Cassabois, Guillaume, Jankovic, Aleksander, Ferreira, Robson, Darson, David, Voisin, Christophe, ...
We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge...
Giant optical anisotropy in a single InAs quantum dot in a very dilute quantum-dot ensemble (2004)
Favero, I., Cassabois, Guillaume, Jankovic, A., Ferreira, R., Darson, D., Voisin, C., ...
We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge...
Spin-selective optical absorption of singly charged excitons in a quantum dot (2004)
Högele, A., Kroner, M., Seidl, S., Karrai, K., Atatüre, M., Dreiser, J., ...
We investigate high resolution laser absorption spectroscopy of a single InGaAs/GaAs self-assembled quantum dot embedded in a field-effect structure. We show experimentally that the interband optical...
Giant optical anisotropy in a single InAs quantum dot in a very dilute quantum-dot ensemble (2004)
Favero, Ivan, Cassabois, Guillaume, Jankovic, Aleksander, Ferreira, Robson, Darson, David, Voisin, Christophe, ...
We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge...
Giant optical anisotropy in a single InAs quantum dot in a very dilute quantum-dot ensemble (2004)
Favero, Ivan, Cassabois, Guillaume, Jankovic, Aleksander, Ferreira, Robson, Darson, David, Voisin, Christophe, ...
We present the experimental evidence of giant optical anisotropy in single InAs quantum dots. Polarization-resolved photoluminescence spectroscopy reveals a linear polarization ratio with huge...
Fabrication of high Q square-lattice photonic crystal microcavities (2003)
Hennessy, K, Reese, C, Badolato, A, Wang, C F, Imamoglu, A, Petroff, P M, ...
This work discusses the fabrication of two-dimensional photonic crystal microcavities (PCMs) in a thin GaAs membrane. We have developed a fabrication process for square-lattice, single-hole-defect...