标题： 拉比干涉仪与超冷气体的卡西米尔-波德力势敏感测量 显示英文标题

标题： Rabi Interferometry and Sensitive Measurement of the Casimir-Polder Force with Ultra-Cold Gases

摘要： 我们证明了在双阱势中囚禁的简并费米气体或玻色气体的拉比振荡可以用于微米尺度外部力的干涉测量。与马赫-曾德尔干涉仪相比，拉比干涉仪的灵敏度较低，但实现起来更简单，因为它不需要动态的光束分裂/重组过程。作为应用，我们提出了一种测量原子与介电表面之间卡西米尔-波德勒力的方法。我们发现，即使干涉仪输入的是相对少量原子的相干态，并且存在现实实验中的噪声，仍然可以以足够的灵敏度来区分卡西米尔-波德勒势的热和零温区域。通过自旋压缩态可以获得更高的灵敏度。 显示英文摘要

摘要： We show that Rabi oscillations of a degenerate fermionic or bosonic gas trapped in a double-well potential can be exploited for the interferometric measurement of external forces at micrometer length scales. The Rabi interferometer is less sensitive, but easier to implement, than the Mach-Zehnder since it does not require dynamical beam-splitting/recombination processes. As an application we propose a measurement of the Casimir-Polder force acting between the atoms and a dielectric surface. We find that even if the interferometer is fed with a coherent state of relatively small number of atoms, and in the presence of realistic experimental noise, the force can be measured with a sensitivity sufficient to discriminate between thermal and zero-temperature regimes of the Casimir-Polder potential. Higher sensitivities can be reached with spin squeezed states.