Wavelength-tunable Single Photon Source in The
il y a 2 semaines
**Wavelength-tunable single photon source in the telecom band**:
- Réf **ABG-123458**
- Sujet de Thèse- 26/04/2024- Contrat doctoral- Institut des Nanotechnologies de Lyon- Lieu de travail- Villeurbanne - Auvergne-Rhône-Alpes - France- Intitulé du sujet- Wavelength-tunable single photon source in the telecom band- Champs scientifiques- Matériaux
- Physique
- Mots clés- semiconductor nanowires, single photon sources, photoluminescence, molecular beam epitaxy**Description du sujet**:
Highly efficient single photons sources emitting in the telecommunication bands will be key elements to enhance the capability of quantum communications.
A large number of approaches are currently being studied to generate single photons. In the _Institut des Nanotechnologies de Lyon_ (INL - UMR CNRS 5270), we have a huge expertise in the field of nanowire-based telecom-band single photon sources. This source involves an InAs quantum dot (QD) embedded inside an InP nanowire (NW). The NW acts as a waveguide and allows a highly efficient and directional outcoupling of the photons emitted by the QD.
To be able to integrate a large number of quantum sources into a fiber-based quantum network, these sources will have to be wavelength-tunable. In this thesis, we plan to embed the semiconductor QD-NW inside a shell of a phase change material (PCM) in amorphous phase. Then, local heating will be used to progressively crystallize the amorphous PCM to strain the QD, modifying its emission energy. The use of a PCM guarantees the reversibility of the process.
In this thesis, the recruited PhD student will work on:
- The growth of InAs/InP quantum dot - nanowires by molecular beam epitaxy.
- The deposition of a PCM shell around the QD-NWs.
- The optical study by photoluminescence setups of this semiconductor-PCM hybrid nanostructure to quantify the impact of the PCM on the QD emission properties.
This work is built on existing expertise in the host laboratory on the growth and optical characterization of InAs/InP QD-NWs [1,2,3] and elaboration of PCM [4,5].
The thesis is part of a project funded by the ANR (French National Research Agency), and will be hosted in the _Functional Materials and Nanostructures _team of the _Institut des Nanotechnologies de Lyon_ (INL). The supervisory team will be composed of Dr. Nicolas Chauvin (CNRS researcher) and Dr. José Penuelas (Assistant Professor at EC Lyon), and the work will be assisted by other permanent researchers at the INL and the technical staff of the Nanolyon platform. -
**Prise de fonction**:
- 02/09/2024**Nature du financement**:
- Contrat doctoral**Précisions sur le financement**:
- 2130 € gross/month**Présentation établissement et labo d'accueil**:
- Institut des Nanotechnologies de LyonFUNCTIONAL MATERIALS
Functional oxides on silicon, heterostructures combining semiconductors and crystalline oxides, nanowires (III-V, Ge and oxide), monolithic integration on silicon, functional integration, nanostructuring by electrochemical anodisation, III-V heterostructures for photonics, nanoemitters and nanoprobes, nanocharacterization, physical studies
ELECTRONICS
Single electron devices, Silicon-based nano-devices, functional material-based devices, computing architectures based on emerging technologies, distributed sensor systems, heterogeneous design methods, MEMS, micro
- and nano-scale electrical characterisation
LIGHT ENGINEERING AND CONVERSION (i-LUM)
Photonic crystals, nanophotonic integration, III-V semiconductor-based MOEMS, silicon solar cells (process, silicon thin-film, nanostructures), optical and electrical characterizations and simulations
DEVICE FOR HEALTH AND ENVIRONMENT
Bottom-up nanotechnologies, integrated micro-nano-biosystems, biomedical sensors, intelligent clothing, lab-on-chip, micro-nano-fluidics
**Site web**:- 31/05/2024
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