منابع مشابه
Polaritonic Feshbach resonance
A Feshbach resonance occurs when the energy of two interacting free particles comes into resonance with a molecular bound state. When approaching this resonance, marked changes in the interaction strength between the particles can arise. Feshbach resonances provide a powerful tool for controlling the interactions in ultracold atomic gases, which can be switched from repulsive to attractive1–4, ...
متن کاملBroad Feshbach Resonance in the Li-KMixture
We study the widths of interspecies Feshbach resonances in a mixture of the fermionic quantum gases Li and K. We develop a model to calculate the width and position of all available Feshbach resonances for a system. Using the model, we select the optimal resonance to study the Li=K mixture. Experimentally, we obtain the asymmetric Fano line shape of the interspecies elastic cross section by mea...
متن کاملOrbital Feshbach Resonance in Alkali-Earth Atoms.
For a mixture of alkali-earth atomic gas in the long-lived excited state ^{3}P_{0} and the ground state ^{1}S_{0}, in addition to nuclear spin, another "orbital" index is introduced to distinguish these two internal states. In this Letter we propose a mechanism to induce Feshbach resonance between two atoms with different orbital and nuclear spin quantum numbers. Two essential ingredients are t...
متن کاملFour-boson scale near a Feshbach resonance
– We show that an independent four-body momentum scale μ(4) drives the tetramer binding energy for fixed trimer energy (or three-body scale μ(3)) and large scattering length (a). The threeand four-body forces from the one-channel reduction of the atomic interaction near a Feshbach resonance disentangle μ(4) and μ(3). The four-body independent scale is also manifested through a family of Tjon li...
متن کاملStochastic resonance in atomic optical bistability
Stochastic resonance SR is experimentally demonstrated in an atomic optical bistable system consisting of three-level atoms in -type configuration confined in an optical ring cavity. The optical bistable system with enhanced Kerr nonlinearity due to atomic coherence is driven by a periodic signal and a Gaussian white noise source with variable amplitude, and displays an improved output signal-t...
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ژورنال
عنوان ژورنال: Journal of Modern Optics
سال: 2010
ISSN: 0950-0340,1362-3044
DOI: 10.1080/09500341003654419