Achtung:

Sie haben Javascript deaktiviert!
Sie haben versucht eine Funktion zu nutzen, die nur mit Javascript möglich ist. Um sämtliche Funktionalitäten unserer Internetseite zu nutzen, aktivieren Sie bitte Javascript in Ihrem Browser.

Foto (Matthias Groppe): Holographie-Apparatur von Herrn Dr. Andreas Redler

Foto: Foto (Matthias Groppe): Holographie-Apparatur von Herrn Dr. Andreas Redler

|

Bachelor / Master Theses on Multiplexed Single Photon Sources

Context of this work

 

The IQO group is working within a research project (funded by the Deutsche Forschungs­gemeinschaft DFG) on the development of integrated optical, efficient true single photon source in the telecom regime. A time multiplexing scheme will be used to provide photons “on demand” with a high probability of triggered single photon generation and strongly suppressed multi-photon contributions.

The ultimate goal is to develop a time multiplexed source which is based on integrated optical circuits realized in LiNbO3. A first circuit is used for photon pair generation via parametric down-conversion (PDC) in a periodically poled section of the substrate. A monolithically integrated subsequent directional coupler acts as a wavelength division multiplexer to spatially separate the generated signal and idler photons. The device will be pumped by a burst of pump pulses. The signal photons are used to herald the presence of pair generation processes.  With a fiber-based time-multiplexing detector a herald detection with photon-number resolution will be implemented. The idler photons are routed to a second integrated circuit with two electro-optic 2x2 switches. The first idler photon within the burst - which is heralded by detecting the corresponding signal photon – is routed via the first electro-optic switch to a fiber loop. The stored photon is released from that loop at the end of the burst cycle.

Topics for master/bachelor theses:

The realization of this complex source requires the development of specific integrated optical components and circuits and their implementation. Several sub-tasks can be defined which are well suited for master or bachelor theses. In particular the following topics are feasible:

  • Optimization of fiber-waveguide interfacing
  • Electro-optically controllable switch circuits and fiber-loops
  • Design and performance studies of multiplexed single photon sources

Details of the contents are still a subject of discussion. If you are interested, feel free to contact us.

Interested? 

Please get in touch with

Prof. Dr. Christine Silberhorn
Phone: 05251 60 5884
Mail: christine.silberhorn[at]upb.de 

Dr. Harald Herrmann
Phone: 05251 60 5879
Mail: h.herrmann[at]physik.upb.de

Weitere Stellenausschreibungen

Abgeordnete Lehrkraft

| An der Universität Paderborn ist am Department Physik -Physikdidaktik- eine Stelle mit einer abgeordneten Lehrkraft für besondere Aufgaben gemäß § 42 HG zu besetzen. Die Stelle dient der wissenschaftlichen Qualifizierung (Promotion oder Habilitation)...

Master Thesis on a Novel Entangled Photon Source

| We are looking for a student to do a master thesis on the construction of a new source of entangled photons.

SHK-Stellen in der Arbeitsgruppe für optoelektronische Bauelemente und Materialien

| Die Arbeitsgruppe freut sich über interessierte und engagierte Studenten, die als SHKs an unseren Forschungsprojekten mitarbeiten möchten. Bei Interesse kontaktieren Sie Prof. Dr. Dirk Reuter. Our group is continuously looking for interested and...

Bachelor- und Masterarbeiten in der Arbeitsgruppe für optoelektronische Bauelemente und Materialien

| Gerne  vergeben wir  an engagierte Studenten Themen für Bachelor- und Masterarbeiten, die sich an aktuellen Forschungsfragen innerhalb unserer Arbeitsgruppe orientieren. Bei Interesse wenden Sie sich bitte an Prof. Dr. Dirk Reuter. We are looking...

Ph.D. position on integrated, non-linear quantum devices and circuits with electro-optic control

| The IQO group is looking for a Ph.D. student to work on the implementation of integrated, non-linear quantum devices and circuits with electro-optic control.

Master Thesis on Noise Effects in a Quantum Walk Network

| We are looking for a student doing her/his master thesis within our quantum walk project studying the noise effects.

Bachelor / Master Theses on Multiplexed Single Photon Sources

| We are looking for students doing their bachelor or master thesis within a research project on the generation of single photons exploiting a time multiplexing technique.

Offene Stellen für SHK, Bachelor- und Masterarbeiten

| Wir vergeben ständig Themen für Bachelor- und Masterarbeiten, die sich an aktuellen Forschungsfragen orientieren. Bei Interesse wenden Sie sich einfach an Prof. Lindner oder Dr. Riedl. Ideal ist es, wenn wir ein paar Wochen Vorlaufzeit haben, um...

Open positions for student assistance (SHK), Bachelor-, and Master-Thesis

| We are continuously looking for interested students and interns to actively participate in our research projects. If you are interested, please contact Prof. Thomas Zentgraf.

Open positions for student assistance (SHK)

| We are continuously looking for interested students and interns to actively participate in our research projects. If you are interested, please contact Prof. Christine Silberhorn.

Die Universität der Informationsgesellschaft