5/26/2009 | Download File (103.25 MB) - right click to download
People often talk about the quantum state of n entangled particles as if it contained an amount of information exponential in n. Sometimes, they draw the conclusion from this that quantum mechanics must be an extravagant theory valid only for simple systems or small numbers of particles, or that largescale quantum computing must be impossible in principle.
5/12/2009 | Download File (111.39 MB) - right click to download
The author of this talk, an astrophysicist by training, had the opportunity, on two occasions, to visit the Hubble Space Telescope (HST) on its Low Earth Orbit as a member of STS-46 and STS-103 Space Shuttle crews. These two visits allowed the execution of essential repair work, mainly in the area of optical performance, electrical power supply, and attitude control of the orbiting observatory.
5/5/2009 | Download File (120.78 MB) - right click to download
The changes in the atomic configuration underlying chemical reactions, phase transitions and many other fundamental processes in nature take place on a femtosecond (fs) time scale, that is, roughly speaking 10-14 to 10-13 s (1 fs = 10-15s). Ultrafast lasers and optical spectroscopy provide the capability of temporally resolving these processes but they lack the spatial resolution that is be required to directly track the motion of the atoms
4/28/2009 | Download File (62.02 MB) - right click to download
Superconductivity is a most remarkable property of matter, whereby electrons enter spontaneously a state of macroscopic quantum coherence in which electricity flows perfectly. Were this state sustainable at room temperature, our technological world would be profoundly transformed. The most promising materials are the copper oxides which remain superconducting halfway to room temperature
4/28/2009 | Download File (62.02 MB) - right click to download
Superconductivity is a most remarkable property of matter, whereby electrons enter spontaneously a state of macroscopic quantum coherence in which electricity flows perfectly. Were this state sustainable at room temperature, our technological world would be profoundly transformed. The most promising materials are the copper oxides which remain superconducting halfway to room temperature
See All Episodes of The Zurich Physics Colloquium >
