By J. M. Raimond (auth.), Martial Ducloy, Daniel Bloch (eds.)
In the previous couple of years it was once visible the emergence of assorted new quantum phenomena particularly similar with digital or optical confinement on a sub-wavelength-size. speedy advancements at the same time happened within the box of Atomic Physics, significantly via numerous regimes of hollow space Quantum Electrodynamics, and in good nation Physics, with advances in Quantum good expertise and Nanooptoelectronics. at the same time, breakthroughs in Near-Field Optics supplied new instruments which could be commonly appropriate to those domain names. although, the foremost thoughts used to explain those new and in part similar results are frequently very varied and particular of the group inquisitive about a given improvement. it's been the ambition of the assembly held at "Centre de body des Houches" to offer a chance to experts of other groups to deepen their realizing of advances kind of in detail concerning their very own box, whereas providing the fundamental ideas of those various fields via pedagogical Introductions. The viewers comprised complicated scholars, postdocs and senior scientists, with a balanced participation of Atomic Physicists and reliable country Physicists, and had a really foreign personality. The significant efforts of the teachers, as a way to current interesting new ends up in a language obtainable to the entire viewers, have been the basic parts to accomplish effectively what was once the most aim of this School.
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Extra info for Quantum Optics of Confined Systems
Sample text
The degeneracy of these modes is slightly lifted by geometric imperfections: the two frequencies are 146 kHz apart. The modes can be tuned simultaneously by translating one mirror with the help of a mechanical drive, and the other by a PZT stack. Both modes have a quality factor Q = 8. 10 5 . It is determined by monitoring the cavity transmission through two coupling holes drilled in the mirrors centers. The field damping time tcav = 2 J-LS is thus much shorter that the atom-cavity interaction time tint = 25 J-LS.
The only adjustable parameter is the atom-field coupling. 5) kHz is in good agreement with, and more precise than, the one deduced from the beam position. It gives an excellent and independant calibration of the field intensity in the light shift experiment. Lamb shifts are of course well known, and have been, in some cases, measured with excellent precision. Ordinarily, however, they are due to the coupling of the atomic levels with a whole continuum of field modes. This experiment is, to our knowledge, the first one which singles out the effect of only one field mode and studies the continuous transition between Lamb shifts and light shifts.
It is therefore a Quantum Non Demolition (QND) measurement [70, 71, 72, 73]. If one neglects relaxation, the photon left in the cavity after detection of an atom in Ie) will remain forever, and all following atoms will exit the cavity in Ie). This correlation between repeated measurements is one of the main features of such processes and can be used to check the QND character. Taking into account cavity relaxation, the photon has a small chance to be absorbed or diffused out of the cavity between two measurements.
