The Department’s Professor Mike Adams explains: 'The research topic is "Injected Spin Lasers", that is lasers whose output polarisation is controlled by the injection of spin-polarised electrons. Polarisation is a property of waves that describes the orientation of their oscillations.
Circular polarisation of laser radiation means that the tip of the electric field vector, at a fixed point in space, describes a circle as time progresses. Circular polarisation is referred to as right or left, depending on the direction in which the electric field vector rotates. An electron has one of two types of spin: spin up or spin down. In a spin-injected laser, spin down electrons couple to right circularly polarised radiation, whilst spin up electrons couple to left circularly polarised radiation, thus allowing us to control the output polarisation of the laser.'
'This research comes within the general topic of "spintronics", which is the focus of major research worldwide aimed chiefly at using the spin of electrons to indicate the ones and zeros of binary computing, but there is little effort associated with spin-polarised light sources. This inter-disciplinary project is aimed at understanding the dynamics of spin lasers and covers advanced physics concepts such as chaos and instabilities, as well as optoelectronic components and sub-systems used in telecommunications engineering.'
EU Marie Curie Fellowships support the training and mobility of researchers, whilst promoting excellence in European research.
Victoria Bartholomew | alfa
Breakthrough Prize for Kim Nasmyth
04.12.2017 | IMP - Forschungsinstitut für Molekulare Pathologie GmbH
The key to chemical transformations
29.11.2017 | Schweizerischer Nationalfonds SNF
DNA molecules that follow specific instructions could offer more precise molecular control of synthetic chemical systems, a discovery that opens the door for engineers to create molecular machines with new and complex behaviors.
Researchers have created chemical amplifiers and a chemical oscillator using a systematic method that has the potential to embed sophisticated circuit...
MPQ scientists achieve long storage times for photonic quantum bits which break the lower bound for direct teleportation in a global quantum network.
Concerning the development of quantum memories for the realization of global quantum networks, scientists of the Quantum Dynamics Division led by Professor...
Researchers have developed a water cloaking concept based on electromagnetic forces that could eliminate an object's wake, greatly reducing its drag while...
Tiny pores at a cell's entryway act as miniature bouncers, letting in some electrically charged atoms--ions--but blocking others. Operating as exquisitely sensitive filters, these "ion channels" play a critical role in biological functions such as muscle contraction and the firing of brain cells.
To rapidly transport the right ions through the cell membrane, the tiny channels rely on a complex interplay between the ions and surrounding molecules,...
The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
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