128 research outputs found
Dataset for: A room temperature organic polariton transistor
No full textThe experimental dataset used to create the figures in the paper Zasedatelev A., Baranikov A., Urbonas D., Scafirimuto F., Scherf U., Stoferle T., Mahrt R., Lagoudakis P., (2019). A room temperature organic polariton transistor. Nature Photonics, DOI: 10.1038/s41566-019-0392-8.</span
Dataset for: Single-photon nonlinearity at room temperature.
No full textThe experimental dataset used to create the figures in the paper Zasedatelev A., Baranikov A., Sannikov D., Urbonas D., Scafirimuto F., Shishkov V., Andrianov E., Lozovik Yu., Scherf U., Stoferle T., Mahrt R., Lagoudakis P., Nature (2021). Single-photon nonlinearity at room temperature</span
[Internal security case report: disorderly conduct]
No full textInternal report describes Internal Security Officer Fenton Mahrt finding Masato Morinaga in a very intoxicated condition at the personnel garage.The Willard Schmidt collection, documents some of the administrative duties of Willard Schmidt, the Chief of Internal Security for the War Relocation Authority and the Tule Lake incarceration/segregation camp. This collection contains administrative records and photos documenting the Tule Lake camp, the largest incarceration camp with a peak population of 18,789 and with the most turbulent history. In 1943, the camp was turned into a segregation center to house "disloyal" Japanese Americans relocated from other camps based on their answers to a confusing loyalty questionnaire. The camp endured martial law from November 1943- Jan 1944 after escalating protests and unrest. The hostile environment of the camp lead to many incarcerees renouncing their American citizenship upon the end of incarceration, a process which took 14 years to reverse if they did not wish to be deported to Japan
A room-temperature organic polariton transistor
No full textActive optical elements with ever smaller footprint and lower energy consumption are central to modern photonics. The drive for miniaturization, speed and efficiency, with the concomitant volume reduction of the optically active area, has led to the development of devices that harness strong light–matter interactions. By managing the strength of light–matter coupling to exceed losses, quasiparticles, called exciton-polaritons, are formed that combine the properties of the optical fields with the electronic excitations of the active material. By making use of polaritons in inorganic semiconductor microcavities, all-optical transistor functionality was observed, albeit at cryogenic temperatures1. Here, we replace inorganic semiconductors with a ladder-type polymer in an optical microcavity and realize room-temperature operation of a polariton transistor through vibron-mediated stimulated polariton relaxation. We demonstrate net gain of ~10 dB μm−1, sub-picosecond switching time, cascaded amplification and all-optical logic operation at ambient conditions
Single-photon nonlinearity at room temperature
No full textThe recent progress in nanotechnology1,2 and single-molecule spectroscopy3,4,5 paves the way for emergent cost-effective organic quantum optical technologies with potential applications in useful devices operating at ambient conditions. We harness a π-conjugated ladder-type polymer strongly coupled to a microcavity forming hybrid light–matter states, so-called exciton-polaritons, to create exciton-polariton condensates with quantum fluid properties. Obeying Bose statistics, exciton-polaritons exhibit an extreme nonlinearity when undergoing bosonic stimulation6, which we have managed to trigger at the single-photon level, thereby providing an efficient way for all-optical ultrafast control over the macroscopic condensate wavefunction. Here, we utilize stable excitons dressed with high-energy molecular vibrations, allowing for single-photon nonlinear operation at ambient conditions. This opens new horizons for practical implementations like sub-picosecond switching, amplification and all-optical logic at the fundamental quantum limit
A Comic Approach to Politics? Political Education via Comics
Get PDFThis article examines juvenile comics that deal with politics as a main topic. These comics introduce and develop politicised themes and topics in varying ways and their individual approaches to politics will be discussed and analysed. The first example, the German Micky Maus-Magazin series, occasionally uses political matters to create new comical stories. In the issues discussed here, democratic processes in the fictional city of Duckburg are described. The second example, Andi, published by the Interior Ministry of the State of North Rhine-Westphalia, aims at civic education. This comic explores the very real issues of rightwing extremism and rightwing propaganda within a fictional framework. The third example, Persepolis treats political issues in a serious, but not primarily pedagogical, way. It offers a personal viewpoint on the Iranian revolution in 1979. By reflecting on Iranian society, the Iranian author puts forward new perspectives on the country which are quite opposite to those that are typically represented in Western countries’ daily news. All three comics provide varying degrees of understanding on politics and political processes. Since each example combines elements of entertainment with political information, they will be analysed within the theoretical framework of what Dörner defines as politainment
Fantastic plastic makes the quantum leap
Get PDFA Bose-Einstein condensate is an intriguing state of matter
where extensive collective coherence leads to macroscopic quantum phenomena.
It has now been demonstrated using a thin plastic film at room temperature.
This provides a new, simple route to experimentally study many-body quantum
physics and opens the door for device applications
Exploring the extraordinary optical properties of cesium lead halide perovskite quantum dots
No full text- …
