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Concept

Potential well

Related publications (32)

On the physics of multimode polaritons

Claudéric Ouellet-Plamondon

This thesis is devoted to the study of microcavity polariton systems, in which the strong coupling occurs between more than one exciton or photon modes i.e. multimode polaritons. The first part of this work states the theoretical background of light-matter ...

EPFL2017

Kinetic isotope effects and how to describe them

Jiri Vanicek, Konstantin Karandashev

We review several methods for computing kinetic isotope effects in chemical reactions including semiclassical and quantum instanton theory. These methods describe both the quantization of vibrational modes as well as tunneling and are applied to the ⋅H + H ...

2017

Quantum Mechanical Confinement in the Fin Electron-Hole Bilayer Tunnel Field-Effect Transistor

Mihai Adrian Ionescu, Cem Alper, José Luis Padilla de la Torre

Quantum mechanical confinement in electron-hole bilayer tunnel field-effect transistors (EHBTFETs) affects in a substantial way the band-to-band tunneling (BTBT) mechanism that constitutes their operating principle. Field-induced quantization is known to s ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Band-to-band tunneling distance analysis in the heterogate electron-hole bilayer tunnel field-effect transistor

Mihai Adrian Ionescu, Cem Alper, José Luis Padilla de la Torre

In this work, we analyze the behavior of the band-to-band tunneling distance between electron and hole subbands resulting from field-induced quantum confinement in the heterogate electron-hole bilayer tunnel field-effect transistor. We show that, analogous ...

Amer Inst Physics2016

>25 Gbps direct modulation and data transmission with 1310 nm waveband wafer fused VCSELs

Elyahou Kapon, Alexandru Mereuta, Alexei Sirbu, Vladimir Iakovlev, Andrei Caliman

25 Gb/s transmission over 10 km of standard single mode fiber is demonstrated for 1300 nm wafer fused InP/GaAs VCSELs with increased strain in quantum wells and higher output coupling from the cavity. ...

Ieee2016

Nuclear Quantum Effects in H+ and OH- Diffusion along Confined Water Wires

Michele Ceriotti, Mariana Rossi Carvalho

The diffusion of protons and hydroxide ions along water wires provides an efficient mechanism for charge transport that is exploited by biological membrane channels and shows promise for technological applications such as fuel cells. However, what is lacki ...

Amer Chemical Soc2016

Optical properties of nearly lattice-matched GaN/(Al,In)N quantum wells

Nicolas Grandjean, Jean-François Carlin, Raphaël Butté, Gwénolé Jean Jacopin, Gediminas Liaugaudas

We report a systematic study of the photoluminescence (PL) properties of a series of nearly lattice-matched (LM) GaN/(Al,In)N single quantum well (SQW) samples, with well thickness ranging from 1.5 to 5 nm, grown by metalorganic vapor phase epitaxy. Temper ...

Amer Inst Physics2016

Multidimensional coherent optical spectroscopy of semiconductor nanostructures: a review

Gaël Nardin

Multidimensional coherent optical spectroscopy (MDCS) is an elegant and versatile tool to measure the ultrafast nonlinear optical response of materials. Of particular interest for semiconductor nanostructures, MDCS enables the separation of homogeneous and ...

Institute of Physics2016

Bosonic lasing and trapping of a dressed photon fluid in InGaN at room temperature

Munise Nevin Cobet

The generation of a quantum fluid of dressed photons at room temperature is experimentally demonstrated in an InGaN microcavity which is divided into two-and one-dimensional sections, resulting in single- and switchable multilevel coherent light emission. ...

Amer Physical Soc2016

Multiple polariton modes originating from the coupling of quantum wells in planar microcavity

Benoît Marie Joseph Deveaud, Daniel Oberli, Claudéric Ouellet-Plamondon, Fauzia Jabeen, Grégory Chilpéric Sallen

We report on the observation of multiple polariton modes, originating from an electronic coupling between quantum wells inside a planar microcavity. A series of excitonic transitions are measured for a bare quantum well stack and are precisely identified t ...

American Physical Society2015

Size control, quantum confinement, and oxidation kinetics of silicon nanocrystals synthesized at a high rate by expanding thermal plasma

Lihao Han

The growth mechanism of silicon nanocrystals (Si NCs) synthesized at a high rate by means of expanding thermal plasma chemical vapor deposition technique are studied in this letter. A bimodal Gaussian size distribution is revealed from the high-resolution ...

Amer Inst Physics2015

Towards defect-free 1-D GaAs/AlGaAs heterostructures based on GaAs nanomembranes

Anna Fontcuberta i Morral, Gözde Tütüncüoglu, Federico Matteini, Heidi Andrea Potts, Davide Deiana

We demonstrate the growth of defect-free zinc-blende GaAs nanomembranes by molecular beam epitaxy. Our growth studies indicate a strong impact of As-4 re-emission and shadowing in the growth rate of the structures. The highest aspect ratio structures are o ...

Royal Soc Chemistry2015