By P.R. Berman, C.C. Lin, E. Arimondo (Eds.)
Quantity fifty four of the Advances sequence includes ten contributions, protecting a variety of topic parts in atomic, molecular and optical physics. the object via Regal and Jin experiences the houses of a Fermi degenerate gasoline 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 will be probed through various an exterior magnetic box. Sherson, Julsgaard and Polzik discover the way within which mild and atoms could be entangled, with functions to quantum details processing and verbal exchange. They record at the results of contemporary experiments related to the entanglement of far away items and quantum reminiscence of sunshine. contemporary advancements in chilly Rydberg atom physics are reviewed within the article via Choi, Kaufmann, Cubel-Liebisch, Reinhard, and Raithel. interesting experiments are defined during which chilly, hugely excited atoms ("Rydberg" atoms) and chilly plasmas are generated. facts for a collective excitation of Rydberg topic can be offered. Griffiin and Pindzola provide an account of non-perturbative quantal equipment for electron-atom scattering methods. integrated within the dialogue are the R-matrix with pseudo-states strategy and the time-dependent close-coupling strategy. an intensive assessment of the R-matrix thought of atomic, molecular, and optical procedures is given by way of Burke, Noble, and Burke. They current a scientific improvement of the R-matrix technique and its purposes to numerous strategies 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 flooring and metastable states is mentioned within the article by way of Boffard, Jung, Anderson, and Lin. Excitation go sections measured by way of the optical approach are reviewed with emphasis at the actual interpretation by way of digital constitution of the objective atoms. Ozier and Moazzen-Ahmadi discover inner rotation of symmetric most sensible molecules. advancements of latest experimental equipment in keeping with high-resolution torsional, vibrational, and molecular beam spectroscopy let exact choice of inner obstacles for those symmetric molecules. the topic of attosecond and angstrom technological know-how is reviewed by means of Niikura and Corkum. The underlying actual mechanisms permitting one to generate attosecond radiation pulses are defined and the expertise wanted for the education 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 signs. tools for attaining tens of gigahertz on the spot bandwidth with submegahertz answer utilizing such units are analyzed intimately and verified experimentally. eventually, within the article via Illing, Gauthier, and Roy, it really is proven that small perturbations utilized to optical platforms can be utilized to suppress or keep watch over optical chaos, spatio-temporal dynamics, and styles. purposes of those concepts to communications, laser stabilization, and bettering the sensitivity of low-light optical switches are explored. Â· overseas specialists Â· finished articles Â· New advancements
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Additional info for Advances In Atomic, Molecular, and Optical Physics, Vol. 54
The scattering length a59 was obtained using Eq. , 2002). 5 multiplying npk was determined by modelling the transfer with a pulse-width limited Lorentzian integrated over a Gaussian density profile. The measured scattering length as a function of B is shown in Fig. 25. The solid line shows a fit to the expected form for a Feshbach resonance, Eq. (6). 5 G of the peak were excluded from the fit. 6 G. When B is tuned very close to the Feshbach resonance peak, we expect the measured a59 to have a maximum value of on the order of 1/kF due to the unitarity limit.
4] EXPERIMENTAL REALIZATION OF BCS-BEC CROSSOVER 27 F IG . 13. Potential for potassium atoms created by a single 1064 nm Gaussian laser beam with w = 15 µm and a power of 10 mW. The y-direction includes the effect of gravity. Note that the horizontal scale in the third graph (z-direction) is a factor of 100 larger than the scale in the first two graphs. 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.
2004). Such analysis is possible and has been considered in Refs. , 2004). 3. M EASURING THE M EAN -F IELD I NTERACTION E NERGY Measurements of the collision cross section are useful for detecting the strength of the interaction but are not sensitive to whether the interactions are attractive or repulsive. The mean-field energy, on the other hand, is a quantum mechanical, many-body effect that is proportional to na. , 2001b). For an atomic Fermi gas the mean-field interaction energy has a smaller impact on the thermodynamics.
Advances In Atomic, Molecular, and Optical Physics, Vol. 54 by P.R. Berman, C.C. Lin, E. Arimondo (Eds.)