Publications by Jean Berney | EPFL Graph Search

Dynamics of trion formation in GaAs quantum wells

Benoît Marie Joseph Deveaud, Jean Berney, François Morier-Genoud, Marcia Portella Oberli, Lars Kappei

We show a double path mechanism for the formation of charged excitons (trions); they are formed through bi- and trimolecular processes. This directly implies that both negatively and positively charged excitons coexist in a quantum well, even in the absenc ...

2009

Dressed excitons within an incoherent electron gas: Observation of a Mollow triplet and an Autler-Townes doublet

Benoît Marie Joseph Deveaud, Jean Berney, Marcia Portella Oberli

We demonstrate that the interaction between excitons and a sea of incoherent electrons does not preclude excitons dressing by light. We investigate if exciton-electron scattering plays some inhibiting role in the coherent light-exciton coupling by measurin ...

2008

Many-body interaction evidenced through exciton-trion-electron correlated dynamics

Benoît Marie Joseph Deveaud, Jean Berney, Marcia Portella Oberli, Victoria Ciulin

Interactions among excitons, trions, and electrons are studied in CdTe modulation-doped quantum wells. These many-body interactions are investigated through the nonlinear dynamical properties in the excitonic complexes using time and spectrally resolved pu ...

2004

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Benoît Marie Joseph Deveaud, Jean Berney, François Morier-Genoud, Marcia Portella Oberli, Lars Kappei

We present the results of a detailed time-resolved luminescence study carried out on a very high quality InGaAs quantum well sample where the contributions at the energy of the exciton and at the band edge can be clearly separated. We perform this experime ...

American Physical Society2004

Interacting many-body systems in quantum wells: Evidence for exciton-trion-electron correlations

Benoît Marie Joseph Deveaud, Jean Berney, Marcia Portella Oberli, Victoria Ciulin

We report on the nonlinear optical dynamical properties of excitonic complexes in CdTe modulation-doped quantum wells, due to many-body interactions among excitons, trions, and electrons. These were studied by time and spectrally resolved pump-probe experi ...

American Physical Society2004

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Jean Berney

Electron beam apparatus

Dynamics of trion formation in GaAs quantum wells

Dressed excitons within an incoherent electron gas: Observation of a Mollow triplet and an Autler-Townes doublet

Exciton correlations within an electron gas

Many-body interaction evidenced through exciton-trion-electron correlated dynamics

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Interacting many-body systems in quantum wells: Evidence for exciton-trion-electron correlations

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Dressed excitons within an incoherent electron gas: Observation of a Mollow triplet and an Autler-Townes doublet

Dynamics of trion formation in GaAs quantum wells

Interacting many-body systems in quantum wells: Evidence for exciton-trion-electron correlations

Exciton correlations within an electron gas

Electron beam apparatus

Determination of the exciton formation in quantum wells from time-resolved interband luminescence

Many-body interaction evidenced through exciton-trion-electron correlated dynamics