Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2008-10-09
Physical Review A, 78, 063621, 2008
Physics
Condensed Matter
Other Condensed Matter
8 pages, 9 figures
Scientific paper
10.1103/PhysRevA.78.063621
We propose a feasible scheme to realize nonlinear Ramsey interferometry with a two-component Bose-Einstein condensate, where the nonlinearity arises from the interaction between coherent atoms. In our scheme, two Rosen-Zener pulses are separated by an intermediate holding period of variable duration and through varying the holding period we have observed nice Ramsey interference patterns in time domain. In contrast to the standard Ramsey fringes our nonlinear Ramsey patterns display diversiform structures ascribed to the interplay of the nonlinearity and asymmetry. In particular, we find that the frequency of the nonlinear Ramsey fringes exactly reflects the strength of nonlinearity as well as the asymmetry of system. Our finding suggests a potential application of the nonlinear Ramsey interferometry in calibrating the atomic parameters such as scattering length and energy spectrum.
Duan Wen-Shan
Fu Li-Bin
Li Sheng-Chang
Liu Jie
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