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理论物理通讯：英文版

Nonlinear Ramsey Interferometry of Fermi Superfluid Gases in a Double-Well Potential

蒙红娟, 苟学强, 王文元, Yang Yang, 段文山

Published Jan 1, 2012• 0 citations
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Abstract

在一个双井潜力的费密超流体气体的非线性的 Ramsey interferometry 在这份报纸被调查。我们发现 Ramsey 穗的频率确切反映非线性，或费密超流体气体的散布长度的力量。突然的限制，断热的限制和一般案例的案例被学习。分析结果在对数字的好同意。断热的条件被建议。处于一般状况，零频率的点出现。最后，理论的可能的应用被讨论。

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Acta Physica Sinica•Jan 1, 2012•1 citation
在一个双井潜力的费密超流体气体的非线性的 Ramsey interferometry 在这份报纸被调查。我们发现 Ramsey 穗的频率确切反映非线性，或费密超流体气体的散布长度的力量。突然的限制，断热的限制和一般案例的案例被学习。分析结果在对数字的好同意。断热的条件被建议。处于一般状况，零频率的点出现。最后，理论的可能的应用被讨论。
The nonlinear Ramsey interferometry of Fermi superfluid gases in a double-well potential is investigated in this paper. We found that the frequency of the Ramsey fringes exactly reflects the strength of nonlinearity, or the scattering length of the Fermi superfluid gases. The cases of sudden limit, the adiabatic limit and the general case are studied. The analytical result is in good agreement with the numerical ones. The adiabatic condition is proposed. In general situation, the zero-frequency point emerge. Finally the possible applications of the theory are discussed.
We investigate the relationships between the nonlinear Ramsey interference pattern of the angular frequency and system parameters of fermi superfluid gase in unitarity regime in three limited cases. We find that the interaction between fermions and the difference in energy between double-well potentials have a significant influence on the angular frequency of the interference pattern. Through numerical simulation and theoretical analysis, the relationship between angular frequency of the interference pattern and the system parameters is given, and the numerical simulations and theoretical analyses are in good agreement.