Publications related to Quantum wire

The impact of low symmetry on the electronic and optical properties of quantum wires

Elyahou Kapon, Marc-André Dupertuis, Daniel Oberli

The role of the confinement potential symmetry on the electronic and optical properties of quantum mires is systematically studied. In a wide class of quantum mires with mirror symmetry we evidence a new set of optical transitions resulting both from band ...

2000

Probing excitonic nonlinearities in quantum wires

Benoît Marie Joseph Deveaud, Andrea Crottini, Xiao Wang

We report on the experimental observation of excitonic molecules (biexcitons) in high-quality V-shaped quantum wires. By means of spatially resolved near-field photoluminescence spectroscopy, first we unambiguously isolate excitons with a one-dimensional c ...

2000

Direct observation of the excitonic ac Stark splitting in a quantum well

Benoît Marie Joseph Deveaud, Denis Martin, Cristiano Ciuti, Michele Saba

Ultrafast pump-probe measurements evidence the dynamical Stark splitting in the exciton absorption spectrum of a single semiconductor quantum well. The intensity of the Stark sidebands in the spectrum is comparable to the linear absorption and their separa ...

2000

Intrasubband and intersubband scattering in semiconductor quantum wires

Elyahou Kapon, Benoît Marie Joseph Deveaud, Jean-Daniel Ganière, Daniel Oberli

We have performed low-density (< 10(5) cm(-1)) time-resolved photoluminescence experiments that probe the relaxation of photo-excited carriers in a quantum wire. Our results show that carrier-carrier collisions are dominant at very short times both for int ...

1999

Excitonic corrections and band gap renormalization in quantum wires

Elyahou Kapon, Benoît Marie Joseph Deveaud, Daniel Oberli

We present a theoretical analysis of experimental photoluminescence spectra in highly excited semiconductor quantum wires. We show that the inclusion in the theory of electron-hole correlations strongly modifies the shape of emission spectra at any density ...

1999

Effect of lateral confinement on valence-band mixing and polarization anisotropy in quantum wires

Elyahou Kapon, Marc-André Dupertuis, Daniel Oberli

The optical properties of high-quality V-groove GaAs/AlxGa1-xAs quantum wires have been investigated using low-temperature photoluminescence (PL) and photoluminescence excitation (PLE) techniques. We systematically study the evolution of PL and PLE spectra ...

1998

Band-mixing and coupling in single and double quantum wire structures

Elyahou Kapon, Marc-André Dupertuis, Daniel Oberli

The electronic states in the conduction and valence bands of quantum wires are studied by means of the effective mass hamiltonian and the Luttinger hamiltonian. The band mixing effects due to the wire geometry are fully taken into account by an accurate fi ...

1998

Quantum confined Stark effect in quantum wires: Wave function splitting and cascading

Elyahou Kapon, Marc-André Dupertuis

We show that the two-dimensional quantum confined Stark effect in a semiconductor quantum wire can display novel behaviour, i.e. wave function splitting and cascading. No analog to these phenomena can be found in bulk material or quantum wells. The consequ ...

1998

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Quantum wire

The impact of low symmetry on the electronic and optical properties of quantum wires

Probing excitonic nonlinearities in quantum wires

Direct observation of the excitonic ac Stark splitting in a quantum well

Intrasubband and intersubband scattering in semiconductor quantum wires

Excitonic corrections and band gap renormalization in quantum wires

Effect of lateral confinement on valence-band mixing and polarization anisotropy in quantum wires

Band-mixing and coupling in single and double quantum wire structures

Optical spectroscopy study of carriers recombination in quantum wires

Exciton dynamics in semiconductor confined systems

Quantum confined Stark effect in quantum wires: Wave function splitting and cascading

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Chat with Graph Search

The impact of low symmetry on the electronic and optical properties of quantum wires

Excitonic corrections and band gap renormalization in quantum wires

Intrasubband and intersubband scattering in semiconductor quantum wires

Effect of lateral confinement on valence-band mixing and polarization anisotropy in quantum wires

Direct observation of the excitonic ac Stark splitting in a quantum well

Band-mixing and coupling in single and double quantum wire structures

Optical spectroscopy study of carriers recombination in quantum wires

Exciton dynamics in semiconductor confined systems

Quantum confined Stark effect in quantum wires: Wave function splitting and cascading