Projekt

Computational design of single-photon emitters for quantum technology

Udbyder

Vejleder

Sted

København og omegn

Single-photon emitters are a prerequisite for many quantum technologies including quantum communication and encryption. Until now, single photon emitters have mainly consisted of quantum dots, single molecules, or localised defects in bulk structures. All of these approaches have problems, either in integrating the single photon source in a device, or in the harvesting of the photons after production.

Recently, single-photon emission has been observed from defects in single-layer hexagonal boron- nitride (hBN), a wide-bandgap semiconductor. The defects introduce localized states inside the band gap, and photons are generated by the electronic transitions between the localized states. As the system is quasi two-dimensional, a probe can be placed arbitrarily close to the single photon source, ensuring efficient harvesting, and since boron nitride is a bulk structure, integration into devices is easier.

Through ion implantation techniques, it is possible to introduce many different species of atom into the pristine boron nitride lattice, as either substitutional or interstitial vacancies, without disturbing the global lattice structure. This project aims to simulate the behaviour of these point defects with the aim of identifying specific structures with promising properties for single photon emission. 

The student will perform quantum mechanical computer simulations in the framework of density functional theory (DFT) to obtain the atomic structure and electronic energy levels of different point defects and impurity atoms in a single layer of hBN. Calculations will be performed using our in-house developed DFT code GPAW.  From these calculations the characteristics of the photon emission spectrum will be derived and the most promising systems will be identified. 

The project is well connected to ongoing research activities both within CAMD and at the Center for Nanostructured Graphene (CNG); you will thus be part of a larger team of researchers working on 2D materials and electronic structure theory. The data produced and results obtained in the course of the project will also be beneficial for the 2D Materials Database developed and maintained at CAMD.     


Søg i opslag
Kontakt

Virksomhed/organisation

DTU Fysik

Navn

Kristian Sommer Thygesen

Stilling

Professor

Mail

thygesen@fysik.dtu.dk

Vejleder-info

Bachelor i Elektroteknologi

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Bachelor i Fysik og Nanoteknologi

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Geofysik og Rumteknologi

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Elektroteknologi

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Fotonik

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Matematisk Modellering og Computing

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

Kandidatuddannelsen i Fysik og Nanoteknologi

Vejleder

Kristian Sommer Thygesen

ECTS-point

5 - 30

Type

Afgangsprojekt, Bachelorprojekt, Kandidatspeciale, Specialkursus

OM DTU

DTU er et teknisk eliteuniversitet med international rækkevidde og standard. Vores mission er at udvikle og nyttiggøre naturvidenskab og teknisk videnskab til gavn for samfundet. 10.000 studerende uddanner sig her til fremtiden, og 5.700 medarbejdere har hver dag fokus på uddannelse, forskning, myndighedsrådgivning og innovation, som bidrager til øget vækst og velfærd.

Find os her

Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

Liste over EAN Numre

Job på DTU

Se alle jobs
 

loading..