Spin Squeezing: Transforming One-Axis Twisting into Two-Axis Twisting
نویسندگان
چکیده
منابع مشابه
Spin squeezing via one-axis twisting with coherent light.
We propose a new method of spin squeezing of atomic spin, based on the interactions between atoms and off-resonant light which are known as paramagnetic Faraday rotation and the fictitious magnetic field of light. Since the projection process, squeezed light, or special interactions among the atoms are not required in this method, it can be widely applied to many systems. The attainable range o...
متن کاملSpin squeezing in a generalized one-axis twisting model
We investigate the dependence of spin squeezing on the polar angle of the initial coherent spin state |θ0, φ0〉 in a generalized one-axis twisting model, where the detuning δ is taken into account. We show explicitly that regardless of δ and φ0, previous results of the ideal one-axis twisting is recovered as long as θ0 = π/2. For a small departure of θ0 from π/2, however, the achievable variance...
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Mingfeng Wang,1,2,* Weizhi Qu,1 Pengxiong Li,1 Han Bao,1 Vladan Vuletić,3 and Yanhong Xiao1,4,† 1Department of Physics, State Key Laboratory of Surface Physics and Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), Fudan University, Shanghai 200433, China 2Department of Physics, Wenzhou University, Zhejiang 325035, China 3Department of Physics, MIT–Harvard Center for ...
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We present a detailed analysis of spin squeezing of the one-axis twisting model with a many-body phase dephasing, which is induced by external field fluctuation in a two-mode Bose-Einstein condensates. Even in the presence of the dephasing, our analytical results show that the optimal initial state corresponds to a coherent spin state |θ0, φ0〉 with the polar angle θ0 = π/2. If the dephasing rat...
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We theoretically investigate a scheme to enhance relative number squeezing and spin squeezing in a twocomponent Bose-Einstein condensate (BEC) by utilizing the inherent mean-field dynamics of the condensate. Due to the asymmetry in the scattering lengths, the two components exhibit large density oscillations where they spatially separate and recombine. The effective nonlinearity responsible for...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2011
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.107.013601