PhD projects on Decoherence in Semiconductor Cavity Quantum Electrodynamics
The Nanophotonics Theory and Signalprocessing Group at DTU Fotonik, Department of Photonics Engineering at the Technical University of Denmark (DTU), has two fully financed PhD projects available within the research area of semiconductor quantum photonics.
Cavity quantum electrodynamics, i.e., the controlled coupling of a quantum dot to a nanocavity, is expected to play an important role in future applications such as secure communications, quantum computation and quantum metrology. A particularly important effect limiting the quantum coherence of solid-state structures is the interaction between the quantum emitter and lattice vibrations of the environment, which lead to dephasing and restoring of classical behavior. The scientific objective of this research activity is to obtain a fundamental understanding of the effects that govern the quantum coherence of a quantum dot and to explore strategies for combating decoherence, with applications to single-photon sources and switches. The projects are part of a research project funded by the Danish Council for Independent Research and will take place in close collaboration with international partners.
Project description
Two closely related PhD projects have been defined: PhD project A will be theoretical and use techniques from open quantum systems to analyze the decoherence of quantum dots strongly coupled to waveguides and cavities and under the interaction with a reservoir of phonons. Dynamical quantum Zeno effects and the effect of a structured phonon reservoir will be explored with the purpose of reducing decoherence. PhD project B will be concerned with modeling, design and experimental characterization of specific devices for generating and switching single photons. The projects will be carried out in close collaboration with a postdoc already hired on the project and will exploit synergy with other research activities focusing on quantum dot dynamics, nanocavity lasers and switches.
Qualifications
Candidates should document:
•a MSc degree or equivalent in physics or photonics.
•a strong background in quantum optics and solid-state physics.
•strong analytical skills, and for PhD project B also experience and interest in experimental physics.
•a strong drive and good communication skills.
We offer
We offer an interesting and challenging job in an international environment focusing on education, research, public-sector consultancy and innovation, which contribute to enhancing the economy and improving social welfare. We strive for academic excellence, collegial respect and freedom tempered by responsibility. The Technical University of Denmark (DTU) is a leading technical university in northern Europe and benchmarks with the best universities in the world.
Approval and Enrolment
The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide.
Assessment
The assessment of the applicants will be made by Professor Jesper Mork.
Salary and appointment terms
The appointment will be based on the collective agreement with the Confederation of Professional Associations. The allowance will be agreed with the relevant union. The annual salary amounts to approximately € 46,832 including pension. The employment is for a period of three years.
The place of work is DTU Fotonik, Ørsteds Plads, Building 343, DK-2800 Kongens Lyngby, Denmark. The starting date is March 1, 2016 or as soon as possible thereafter.
Further information
Further information may be obtained from Professor Jesper Mork, jesm@fotonik.dtu.dk, tel.: +45 2082 4576.
You can read more about DTU Fotonik at www.fotonik.dtu.dk/english/Research/Nanophotonics/Theory.
Application
Please submit your application no later than 31 January 2016. Applications must be submitted as one pdf file containing all materials to be given consideration. To apply, please open the link "Apply online," fill in the online application form, and attach all your materials in English in one pdf file. The file must include:
•A letter motivating the application (cover letter)
•Curriculum vitae
•Grade transcripts and BSc/MSc diploma (an official translation into English)
•Excel sheet with translation of grades to the Danish grading system (see guidelines and excel spreadsheet here)
Candidates may apply prior to obtaining their MSc degree, but cannot begin before having received it.
All interested candidates irrespective of age, gender, race, disability, religion or ethnic background are encouraged to apply.
DTU Fotonik is one of the largest centers in the world focusing solely on research in photonics, covering the fields of lasers, LEDs, optical sensors, optical fibers, optical communications, nanophotonics and quantum photonics.
DTU is a technical university providing internationally leading research, education, innovation and public service. Our staff of 5,800 advance science and technology to create innovative solutions that meet the demands of society; and our 10,300 students are being educated to address the technological challenges of the future. DTU is an independent academic university collaborating globally with business, industry, government, and public agencies.
