By P.R. Berman, C.C. Lin, E. Arimondo (Eds.)
Quantity fifty four of the Advances sequence comprises ten contributions, masking a range of topic parts in atomic, molecular and optical physics. the thing by means of Regal and Jin stories the homes of a Fermi degenerate fuel of chilly potassium atoms within the crossover regime among the Bose-Einstein condensation of molecules and the condensation of fermionic atom pairs. The transition among the 2 areas may be probed via various an exterior magnetic box. Sherson, Julsgaard and Polzik discover the style during which mild and atoms might be entangled, with functions to quantum info processing and verbal exchange. They record at the results of fresh experiments concerning the entanglement of far-off items and quantum reminiscence of sunshine. contemporary advancements in chilly Rydberg atom physics are reviewed within the article by way of Choi, Kaufmann, Cubel-Liebisch, Reinhard, and Raithel. interesting experiments are defined within which chilly, hugely excited atoms ("Rydberg" atoms) and chilly plasmas are generated. facts for a collective excitation of Rydberg topic is additionally provided. Griffiin and Pindzola provide an account of non-perturbative quantal tools for electron-atom scattering methods. integrated within the dialogue are the R-matrix with pseudo-states technique and the time-dependent close-coupling strategy. an in depth overview of the R-matrix thought of atomic, molecular, and optical tactics is given through Burke, Noble, and Burke. They current a scientific improvement of the R-matrix strategy and its functions to numerous techniques akin to electron-atom scattering, atomic photoionization, electron-molecule scattering, positron-atom scattering, and atomic/molecular multiphoton approaches. Electron influence excitation of rare-gas atoms from either their floor and metastable states is mentioned within the article by means of Boffard, Jung, Anderson, and Lin. Excitation move sections measured through the optical procedure are reviewed with emphasis at the actual interpretation when it comes to digital constitution of the objective atoms. Ozier and Moazzen-Ahmadi discover inner rotation of symmetric most sensible molecules. advancements of recent experimental equipment in keeping with high-resolution torsional, vibrational, and molecular beam spectroscopy permit exact selection of inner limitations for those symmetric molecules. the topic of attosecond and angstrom technology is reviewed by way of Niikura and Corkum. The underlying actual mechanisms permitting one to generate attosecond radiation pulses are defined and the know-how wanted for the instruction of such pulses is mentioned. LeGouÃ«t, Bretenaker, and LorgerÃ© describe how infrequent earth ions embedded in crystals can be utilized for processing optically carried broadband radio-frequency indications. equipment for achieving tens of gigahertz prompt bandwidth with submegahertz solution utilizing such units are analyzed intimately and verified experimentally. eventually, within the article through Illing, Gauthier, and Roy, it's proven that small perturbations utilized to optical platforms can be utilized to suppress or keep an eye on optical chaos, spatio-temporal dynamics, and styles. purposes of those concepts to communications, laser stabilization, and enhancing the sensitivity of low-light optical switches are explored. Â· foreign specialists Â· finished articles Â· New advancements
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Extra resources for Advances In Atomic, Molecular, and Optical Physics, Vol. 54
7(a). The interatomic potential of the two free atoms is often referred to as the open channel, while the potential containing the bare molecule state is referred to as the closed channel. When the closed and open channels describe atoms in different magnetic sublevels, they can be shifted with respect to each other through the Zeeman effect using an external magnetic field (Fig. 7(b)). Typically the effect of the coupling between the closed and open channels is small, but at a Feshbach resonance when the open-channel dissociation threshold is nearly degenerate with the bare molecule state, the effect of the coupling can be significantly enhanced.
The dotted line shows the movement of the bare molecule energy with magnetic field, and the flat dashed line is the value of E−1 . The multichannel bound state is the dressed state of the avoided crossing of these two levels. The bare molecule state crosses threshold about 9 G higher than the position where the multichannel bound state comes through threshold, B0 . , 2004). Note that for 40 K the multichannel bound state at low field adiabatically connects to the highest-lying vibrational state of the open channel, rather than the bare molecule of the closed channel.
The dashed line in the left-most graph shows the parabola that approximates the potential for small x. An optical dipole trap results from the interaction between a light field and the oscillating atomic electric dipole moment that is induced by the light field. This effect, known as the ac Stark shift, forms the conservative part of the interaction of atoms with light. The shift is proportional to the light intensity, and the sign depends upon the sign of the detuning of the light compared to the atomic resonance.
Advances In Atomic, Molecular, and Optical Physics, Vol. 54 by P.R. Berman, C.C. Lin, E. Arimondo (Eds.)