on 17-07-2015
Daowen Qiu, Department of Computer Science, Sun Yat-sen University, Guangzhou, China
17/07/2015, 10:00
Room P3.10, Mathematics Building
In this talk, we report a recent work of our group regarding quantum algorithm for phase estimation. Specially, we design a distributed semi-quantum algorithm for phase estimation which has a better time complexity than the conventional quantum algorithm.
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on 10-07-2015
Sven Höfling, Wuerzburg University and University of St Andrews
10/07/2015, 10:00
Room 3.10, Mathematics Building, IST
Semiconductor diode lasers play a major role in everyday life in our information society. These lasers generate coherent light by stimulated emission of photons. In contrast, laser-like operation can be obtained also by stimulated scattering of bosonic quasiparticles called exciton-polaritons into the ground state of strongly coupled light-matter systems in microcavities. This polariton laser or dynamic and non-equilibrium polariton condensate regime can be reached with pump thresholds lower than conventional lasing. The exciton-polaritons decay by the leakage of photons from a cavity, which produces a monochromatic and coherent light output. In this talk, we discuss the electrical injection of exciton-polaritons into microcavity structures and the formation of exciton-polariton condensates in lattice structures with deep and tailorable confinement potential.
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